Let's roll up our sleeves and solve this. We have 824 and we're going to multiply it by 485, essentially adding 824 to itself 485 times.
Step 1: 0 + 824 = 824
Step 2: 824 + 824 = 1648
Step 3: 1648 + 824 = 2472
Step 4: 2472 + 824 = 3296
Step 5: 3296 + 824 = 4120
Step 6: 4120 + 824 = 4944
Step 7: 4944 + 824 = 5768
Step 8: 5768 + 824 = 6592
Step 9: 6592 + 824 = 7416
Step 10: 7416 + 824 = 8240
Step 11: 8240 + 824 = 9064
Step 12: 9064 + 824 = 9888
Step 13: 9888 + 824 = 10712
Step 14: 10712 + 824 = 11536
Step 15: 11536 + 824 = 12360
Step 16: 12360 + 824 = 13184
Step 17: 13184 + 824 = 14008
Step 18: 14008 + 824 = 14832
Step 19: 14832 + 824 = 15656
Step 20: 15656 + 824 = 16480
Step 21: 16480 + 824 = 17304
Step 22: 17304 + 824 = 18128
Step 23: 18128 + 824 = 18952
Step 24: 18952 + 824 = 19776
Step 25: 19776 + 824 = 20600
Step 26: 20600 + 824 = 21424
Step 27: 21424 + 824 = 22248
Step 28: 22248 + 824 = 23072
Step 29: 23072 + 824 = 23896
Step 30: 23896 + 824 = 24720
Step 31: 24720 + 824 = 25544
Step 32: 25544 + 824 = 26368
Step 33: 26368 + 824 = 27192
Step 34: 27192 + 824 = 28016
Step 35: 28016 + 824 = 28840
Step 36: 28840 + 824 = 29664
Step 37: 29664 + 824 = 30488
Step 38: 30488 + 824 = 31312
Step 39: 31312 + 824 = 32136
Step 40: 32136 + 824 = 32960
Step 41: 32960 + 824 = 33784
Step 42: 33784 + 824 = 34608
Step 43: 34608 + 824 = 35432
Step 44: 35432 + 824 = 36256
Step 45: 36256 + 824 = 37080
Step 46: 37080 + 824 = 37904
Step 47: 37904 + 824 = 38728
Step 48: 38728 + 824 = 39552
Step 49: 39552 + 824 = 40376
Step 50: 40376 + 824 = 41200
Step 51: 41200 + 824 = 42024
Step 52: 42024 + 824 = 42848
Step 53: 42848 + 824 = 43672
Step 54: 43672 + 824 = 44496
Step 55: 44496 + 824 = 45320
Step 56: 45320 + 824 = 46144
Step 57: 46144 + 824 = 46968
Step 58: 46968 + 824 = 47792
Step 59: 47792 + 824 = 48616
Step 60: 48616 + 824 = 49440
Step 61: 49440 + 824 = 50264
Step 62: 50264 + 824 = 51088
Step 63: 51088 + 824 = 51912
Step 64: 51912 + 824 = 52736
Step 65: 52736 + 824 = 53560
Step 66: 53560 + 824 = 54384
Step 67: 54384 + 824 = 55208
Step 68: 55208 + 824 = 56032
Step 69: 56032 + 824 = 56856
Step 70: 56856 + 824 = 57680
Step 71: 57680 + 824 = 58504
Step 72: 58504 + 824 = 59328
Step 73: 59328 + 824 = 60152
Step 74: 60152 + 824 = 60976
Step 75: 60976 + 824 = 61800
Step 76: 61800 + 824 = 62624
Step 77: 62624 + 824 = 63448
Step 78: 63448 + 824 = 64272
Step 79: 64272 + 824 = 65096
Step 80: 65096 + 824 = 65920
Step 81: 65920 + 824 = 66744
Step 82: 66744 + 824 = 67568
Step 83: 67568 + 824 = 68392
Step 84: 68392 + 824 = 69216
Step 85: 69216 + 824 = 70040
Step 86: 70040 + 824 = 70864
Step 87: 70864 + 824 = 71688
Step 88: 71688 + 824 = 72512
Step 89: 72512 + 824 = 73336
Step 90: 73336 + 824 = 74160
Step 91: 74160 + 824 = 74984
Step 92: 74984 + 824 = 75808
Step 93: 75808 + 824 = 76632
Step 94: 76632 + 824 = 77456
Step 95: 77456 + 824 = 78280
Step 96: 78280 + 824 = 79104
Step 97: 79104 + 824 = 79928
Step 98: 79928 + 824 = 80752
Step 99: 80752 + 824 = 81576
Step 100: 81576 + 824 = 82400
Step 101: 82400 + 824 = 83224
Step 102: 83224 + 824 = 84048
Step 103: 84048 + 824 = 84872
Step 104: 84872 + 824 = 85696
Step 105: 85696 + 824 = 86520
Step 106: 86520 + 824 = 87344
Step 107: 87344 + 824 = 88168
Step 108: 88168 + 824 = 88992
Step 109: 88992 + 824 = 89816
Step 110: 89816 + 824 = 90640
Step 111: 90640 + 824 = 91464
Step 112: 91464 + 824 = 92288
Step 113: 92288 + 824 = 93112
Step 114: 93112 + 824 = 93936
Step 115: 93936 + 824 = 94760
Step 116: 94760 + 824 = 95584
Step 117: 95584 + 824 = 96408
Step 118: 96408 + 824 = 97232
Step 119: 97232 + 824 = 98056
Step 120: 98056 + 824 = 98880
Step 121: 98880 + 824 = 99704
Step 122: 99704 + 824 = 100528
Step 123: 100528 + 824 = 101352
Step 124: 101352 + 824 = 102176
Step 125: 102176 + 824 = 103000
Step 126: 103000 + 824 = 103824
Step 127: 103824 + 824 = 104648
Step 128: 104648 + 824 = 105472
Step 129: 105472 + 824 = 106296
Step 130: 106296 + 824 = 107120
Step 131: 107120 + 824 = 107944
Step 132: 107944 + 824 = 108768
Step 133: 108768 + 824 = 109592
Step 134: 109592 + 824 = 110416
Step 135: 110416 + 824 = 111240
Step 136: 111240 + 824 = 112064
Step 137: 112064 + 824 = 112888
Step 138: 112888 + 824 = 113712
Step 139: 113712 + 824 = 114536
Step 140: 114536 + 824 = 115360
Step 141: 115360 + 824 = 116184
Step 142: 116184 + 824 = 117008
Step 143: 117008 + 824 = 117832
Step 144: 117832 + 824 = 118656
Step 145: 118656 + 824 = 119480
Step 146: 119480 + 824 = 120304
Step 147: 120304 + 824 = 121128
Step 148: 121128 + 824 = 121952
Step 149: 121952 + 824 = 122776
Step 150: 122776 + 824 = 123600
Step 151: 123600 + 824 = 124424
Step 152: 124424 + 824 = 125248
Step 153: 125248 + 824 = 126072
Step 154: 126072 + 824 = 126896
Step 155: 126896 + 824 = 127720
Step 156: 127720 + 824 = 128544
Step 157: 128544 + 824 = 129368
Step 158: 129368 + 824 = 130192
Step 159: 130192 + 824 = 131016
Step 160: 131016 + 824 = 131840
Step 161: 131840 + 824 = 132664
Step 162: 132664 + 824 = 133488
Step 163: 133488 + 824 = 134312
Step 164: 134312 + 824 = 135136
Step 165: 135136 + 824 = 135960
Step 166: 135960 + 824 = 136784
Step 167: 136784 + 824 = 137608
Step 168: 137608 + 824 = 138432
Step 169: 138432 + 824 = 139256
Step 170: 139256 + 824 = 140080
Step 171: 140080 + 824 = 140904
Step 172: 140904 + 824 = 141728
Step 173: 141728 + 824 = 142552
Step 174: 142552 + 824 = 143376
Step 175: 143376 + 824 = 144200
Step 176: 144200 + 824 = 145024
Step 177: 145024 + 824 = 145848
Step 178: 145848 + 824 = 146672
Step 179: 146672 + 824 = 147496
Step 180: 147496 + 824 = 148320
Step 181: 148320 + 824 = 149144
Step 182: 149144 + 824 = 149968
Step 183: 149968 + 824 = 150792
Step 184: 150792 + 824 = 151616
Step 185: 151616 + 824 = 152440
Step 186: 152440 + 824 = 153264
Step 187: 153264 + 824 = 154088
Step 188: 154088 + 824 = 154912
Step 189: 154912 + 824 = 155736
Step 190: 155736 + 824 = 156560
Step 191: 156560 + 824 = 157384
Step 192: 157384 + 824 = 158208
Step 193: 158208 + 824 = 159032
Step 194: 159032 + 824 = 159856
Step 195: 159856 + 824 = 160680
Step 196: 160680 + 824 = 161504
Step 197: 161504 + 824 = 162328
Step 198: 162328 + 824 = 163152
Step 199: 163152 + 824 = 163976
Step 200: 163976 + 824 = 164800
Step 201: 164800 + 824 = 165624
Step 202: 165624 + 824 = 166448
Step 203: 166448 + 824 = 167272
Step 204: 167272 + 824 = 168096
Step 205: 168096 + 824 = 168920
Step 206: 168920 + 824 = 169744
Step 207: 169744 + 824 = 170568
Step 208: 170568 + 824 = 171392
Step 209: 171392 + 824 = 172216
Step 210: 172216 + 824 = 173040
Step 211: 173040 + 824 = 173864
Step 212: 173864 + 824 = 174688
Step 213: 174688 + 824 = 175512
Step 214: 175512 + 824 = 176336
Step 215: 176336 + 824 = 177160
Step 216: 177160 + 824 = 177984
Step 217: 177984 + 824 = 178808
Step 218: 178808 + 824 = 179632
Step 219: 179632 + 824 = 180456
Step 220: 180456 + 824 = 181280
Step 221: 181280 + 824 = 182104
Step 222: 182104 + 824 = 182928
Step 223: 182928 + 824 = 183752
Step 224: 183752 + 824 = 184576
Step 225: 184576 + 824 = 185400
Step 226: 185400 + 824 = 186224
Step 227: 186224 + 824 = 187048
Step 228: 187048 + 824 = 187872
Step 229: 187872 + 824 = 188696
Step 230: 188696 + 824 = 189520
Step 231: 189520 + 824 = 190344
Step 232: 190344 + 824 = 191168
Step 233: 191168 + 824 = 191992
Step 234: 191992 + 824 = 192816
Step 235: 192816 + 824 = 193640
Step 236: 193640 + 824 = 194464
Step 237: 194464 + 824 = 195288
Step 238: 195288 + 824 = 196112
Step 239: 196112 + 824 = 196936
Step 240: 196936 + 824 = 197760
Step 241: 197760 + 824 = 198584
Step 242: 198584 + 824 = 199408
Step 243: 199408 + 824 = 200232
Step 244: 200232 + 824 = 201056
Step 245: 201056 + 824 = 201880
Step 246: 201880 + 824 = 202704
Step 247: 202704 + 824 = 203528
Step 248: 203528 + 824 = 204352
Step 249: 204352 + 824 = 205176
Step 250: 205176 + 824 = 206000
Step 251: 206000 + 824 = 206824
Step 252: 206824 + 824 = 207648
Step 253: 207648 + 824 = 208472
Step 254: 208472 + 824 = 209296
Step 255: 209296 + 824 = 210120
Step 256: 210120 + 824 = 210944
Step 257: 210944 + 824 = 211768
Step 258: 211768 + 824 = 212592
Step 259: 212592 + 824 = 213416
Step 260: 213416 + 824 = 214240
Step 261: 214240 + 824 = 215064
Step 262: 215064 + 824 = 215888
Step 263: 215888 + 824 = 216712
Step 264: 216712 + 824 = 217536
Step 265: 217536 + 824 = 218360
Step 266: 218360 + 824 = 219184
Step 267: 219184 + 824 = 220008
Step 268: 220008 + 824 = 220832
Step 269: 220832 + 824 = 221656
Step 270: 221656 + 824 = 222480
Step 271: 222480 + 824 = 223304
Step 272: 223304 + 824 = 224128
Step 273: 224128 + 824 = 224952
Step 274: 224952 + 824 = 225776
Step 275: 225776 + 824 = 226600
Step 276: 226600 + 824 = 227424
Step 277: 227424 + 824 = 228248
Step 278: 228248 + 824 = 229072
Step 279: 229072 + 824 = 229896
Step 280: 229896 + 824 = 230720
Step 281: 230720 + 824 = 231544
Step 282: 231544 + 824 = 232368
Step 283: 232368 + 824 = 233192
Step 284: 233192 + 824 = 234016
Step 285: 234016 + 824 = 234840
Step 286: 234840 + 824 = 235664
Step 287: 235664 + 824 = 236488
Step 288: 236488 + 824 = 237312
Step 289: 237312 + 824 = 238136
Step 290: 238136 + 824 = 238960
Step 291: 238960 + 824 = 239784
Step 292: 239784 + 824 = 240608
Step 293: 240608 + 824 = 241432
Step 294: 241432 + 824 = 242256
Step 295: 242256 + 824 = 243080
Step 296: 243080 + 824 = 243904
Step 297: 243904 + 824 = 244728
Step 298: 244728 + 824 = 245552
Step 299: 245552 + 824 = 246376
Step 300: 246376 + 824 = 247200
Step 301: 247200 + 824 = 248024
Step 302: 248024 + 824 = 248848
Step 303: 248848 + 824 = 249672
Step 304: 249672 + 824 = 250496
Step 305: 250496 + 824 = 251320
Step 306: 251320 + 824 = 252144
Step 307: 252144 + 824 = 252968
Step 308: 252968 + 824 = 253792
Step 309: 253792 + 824 = 254616
Step 310: 254616 + 824 = 255440
Step 311: 255440 + 824 = 256264
Step 312: 256264 + 824 = 257088
Step 313: 257088 + 824 = 257912
Step 314: 257912 + 824 = 258736
Step 315: 258736 + 824 = 259560
Step 316: 259560 + 824 = 260384
Step 317: 260384 + 824 = 261208
Step 318: 261208 + 824 = 262032
Step 319: 262032 + 824 = 262856
Step 320: 262856 + 824 = 263680
Step 321: 263680 + 824 = 264504
Step 322: 264504 + 824 = 265328
Step 323: 265328 + 824 = 266152
Step 324: 266152 + 824 = 266976
Step 325: 266976 + 824 = 267800
Step 326: 267800 + 824 = 268624
Step 327: 268624 + 824 = 269448
Step 328: 269448 + 824 = 270272
Step 329: 270272 + 824 = 271096
Step 330: 271096 + 824 = 271920
Step 331: 271920 + 824 = 272744
Step 332: 272744 + 824 = 273568
Step 333: 273568 + 824 = 274392
Step 334: 274392 + 824 = 275216
Step 335: 275216 + 824 = 276040
Step 336: 276040 + 824 = 276864
Step 337: 276864 + 824 = 277688
Step 338: 277688 + 824 = 278512
Step 339: 278512 + 824 = 279336
Step 340: 279336 + 824 = 280160
Step 341: 280160 + 824 = 280984
Step 342: 280984 + 824 = 281808
Step 343: 281808 + 824 = 282632
Step 344: 282632 + 824 = 283456
Step 345: 283456 + 824 = 284280
Step 346: 284280 + 824 = 285104
Step 347: 285104 + 824 = 285928
Step 348: 285928 + 824 = 286752
Step 349: 286752 + 824 = 287576
Step 350: 287576 + 824 = 288400
Step 351: 288400 + 824 = 289224
Step 352: 289224 + 824 = 290048
Step 353: 290048 + 824 = 290872
Step 354: 290872 + 824 = 291696
Step 355: 291696 + 824 = 292520
Step 356: 292520 + 824 = 293344
Step 357: 293344 + 824 = 294168
Step 358: 294168 + 824 = 294992
Step 359: 294992 + 824 = 295816
Step 360: 295816 + 824 = 296640
Step 361: 296640 + 824 = 297464
Step 362: 297464 + 824 = 298288
Step 363: 298288 + 824 = 299112
Step 364: 299112 + 824 = 299936
Step 365: 299936 + 824 = 300760
Step 366: 300760 + 824 = 301584
Step 367: 301584 + 824 = 302408
Step 368: 302408 + 824 = 303232
Step 369: 303232 + 824 = 304056
Step 370: 304056 + 824 = 304880
Step 371: 304880 + 824 = 305704
Step 372: 305704 + 824 = 306528
Step 373: 306528 + 824 = 307352
Step 374: 307352 + 824 = 308176
Step 375: 308176 + 824 = 309000
Step 376: 309000 + 824 = 309824
Step 377: 309824 + 824 = 310648
Step 378: 310648 + 824 = 311472
Step 379: 311472 + 824 = 312296
Step 380: 312296 + 824 = 313120
Step 381: 313120 + 824 = 313944
Step 382: 313944 + 824 = 314768
Step 383: 314768 + 824 = 315592
Step 384: 315592 + 824 = 316416
Step 385: 316416 + 824 = 317240
Step 386: 317240 + 824 = 318064
Step 387: 318064 + 824 = 318888
Step 388: 318888 + 824 = 319712
Step 389: 319712 + 824 = 320536
Step 390: 320536 + 824 = 321360
Step 391: 321360 + 824 = 322184
Step 392: 322184 + 824 = 323008
Step 393: 323008 + 824 = 323832
Step 394: 323832 + 824 = 324656
Step 395: 324656 + 824 = 325480
Step 396: 325480 + 824 = 326304
Step 397: 326304 + 824 = 327128
Step 398: 327128 + 824 = 327952
Step 399: 327952 + 824 = 328776
Step 400: 328776 + 824 = 329600
Step 401: 329600 + 824 = 330424
Step 402: 330424 + 824 = 331248
Step 403: 331248 + 824 = 332072
Step 404: 332072 + 824 = 332896
Step 405: 332896 + 824 = 333720
Step 406: 333720 + 824 = 334544
Step 407: 334544 + 824 = 335368
Step 408: 335368 + 824 = 336192
Step 409: 336192 + 824 = 337016
Step 410: 337016 + 824 = 337840
Step 411: 337840 + 824 = 338664
Step 412: 338664 + 824 = 339488
Step 413: 339488 + 824 = 340312
Step 414: 340312 + 824 = 341136
Step 415: 341136 + 824 = 341960
Step 416: 341960 + 824 = 342784
Step 417: 342784 + 824 = 343608
Step 418: 343608 + 824 = 344432
Step 419: 344432 + 824 = 345256
Step 420: 345256 + 824 = 346080
Step 421: 346080 + 824 = 346904
Step 422: 346904 + 824 = 347728
Step 423: 347728 + 824 = 348552
Step 424: 348552 + 824 = 349376
Step 425: 349376 + 824 = 350200
Step 426: 350200 + 824 = 351024
Step 427: 351024 + 824 = 351848
Step 428: 351848 + 824 = 352672
Step 429: 352672 + 824 = 353496
Step 430: 353496 + 824 = 354320
Step 431: 354320 + 824 = 355144
Step 432: 355144 + 824 = 355968
Step 433: 355968 + 824 = 356792
Step 434: 356792 + 824 = 357616
Step 435: 357616 + 824 = 358440
Step 436: 358440 + 824 = 359264
Step 437: 359264 + 824 = 360088
Step 438: 360088 + 824 = 360912
Step 439: 360912 + 824 = 361736
Step 440: 361736 + 824 = 362560
Step 441: 362560 + 824 = 363384
Step 442: 363384 + 824 = 364208
Step 443: 364208 + 824 = 365032
Step 444: 365032 + 824 = 365856
Step 445: 365856 + 824 = 366680
Step 446: 366680 + 824 = 367504
Step 447: 367504 + 824 = 368328
Step 448: 368328 + 824 = 369152
Step 449: 369152 + 824 = 369976
Step 450: 369976 + 824 = 370800
Step 451: 370800 + 824 = 371624
Step 452: 371624 + 824 = 372448
Step 453: 372448 + 824 = 373272
Step 454: 373272 + 824 = 374096
Step 455: 374096 + 824 = 374920
Step 456: 374920 + 824 = 375744
Step 457: 375744 + 824 = 376568
Step 458: 376568 + 824 = 377392
Step 459: 377392 + 824 = 378216
Step 460: 378216 + 824 = 379040
Step 461: 379040 + 824 = 379864
Step 462: 379864 + 824 = 380688
Step 463: 380688 + 824 = 381512
Step 464: 381512 + 824 = 382336
Step 465: 382336 + 824 = 383160
Step 466: 383160 + 824 = 383984
Step 467: 383984 + 824 = 384808
Step 468: 384808 + 824 = 385632
Step 469: 385632 + 824 = 386456
Step 470: 386456 + 824 = 387280
Step 471: 387280 + 824 = 388104
Step 472: 388104 + 824 = 388928
Step 473: 388928 + 824 = 389752
Step 474: 389752 + 824 = 390576
Step 475: 390576 + 824 = 391400
Step 476: 391400 + 824 = 392224
Step 477: 392224 + 824 = 393048
Step 478: 393048 + 824 = 393872
Step 479: 393872 + 824 = 394696
Step 480: 394696 + 824 = 395520
Step 481: 395520 + 824 = 396344
Step 482: 396344 + 824 = 397168
Step 483: 397168 + 824 = 397992
Step 484: 397992 + 824 = 398816
Step 485: 398816 + 824 = 399640

So, 824*485 = 399640