OK, let's crack this. We're given 884 and our task is to multiply it by 455. Essentially, we'll be adding 884 to itself 455 times.
Step 1: 0 + 884 = 884
Step 2: 884 + 884 = 1768
Step 3: 1768 + 884 = 2652
Step 4: 2652 + 884 = 3536
Step 5: 3536 + 884 = 4420
Step 6: 4420 + 884 = 5304
Step 7: 5304 + 884 = 6188
Step 8: 6188 + 884 = 7072
Step 9: 7072 + 884 = 7956
Step 10: 7956 + 884 = 8840
Step 11: 8840 + 884 = 9724
Step 12: 9724 + 884 = 10608
Step 13: 10608 + 884 = 11492
Step 14: 11492 + 884 = 12376
Step 15: 12376 + 884 = 13260
Step 16: 13260 + 884 = 14144
Step 17: 14144 + 884 = 15028
Step 18: 15028 + 884 = 15912
Step 19: 15912 + 884 = 16796
Step 20: 16796 + 884 = 17680
Step 21: 17680 + 884 = 18564
Step 22: 18564 + 884 = 19448
Step 23: 19448 + 884 = 20332
Step 24: 20332 + 884 = 21216
Step 25: 21216 + 884 = 22100
Step 26: 22100 + 884 = 22984
Step 27: 22984 + 884 = 23868
Step 28: 23868 + 884 = 24752
Step 29: 24752 + 884 = 25636
Step 30: 25636 + 884 = 26520
Step 31: 26520 + 884 = 27404
Step 32: 27404 + 884 = 28288
Step 33: 28288 + 884 = 29172
Step 34: 29172 + 884 = 30056
Step 35: 30056 + 884 = 30940
Step 36: 30940 + 884 = 31824
Step 37: 31824 + 884 = 32708
Step 38: 32708 + 884 = 33592
Step 39: 33592 + 884 = 34476
Step 40: 34476 + 884 = 35360
Step 41: 35360 + 884 = 36244
Step 42: 36244 + 884 = 37128
Step 43: 37128 + 884 = 38012
Step 44: 38012 + 884 = 38896
Step 45: 38896 + 884 = 39780
Step 46: 39780 + 884 = 40664
Step 47: 40664 + 884 = 41548
Step 48: 41548 + 884 = 42432
Step 49: 42432 + 884 = 43316
Step 50: 43316 + 884 = 44200
Step 51: 44200 + 884 = 45084
Step 52: 45084 + 884 = 45968
Step 53: 45968 + 884 = 46852
Step 54: 46852 + 884 = 47736
Step 55: 47736 + 884 = 48620
Step 56: 48620 + 884 = 49504
Step 57: 49504 + 884 = 50388
Step 58: 50388 + 884 = 51272
Step 59: 51272 + 884 = 52156
Step 60: 52156 + 884 = 53040
Step 61: 53040 + 884 = 53924
Step 62: 53924 + 884 = 54808
Step 63: 54808 + 884 = 55692
Step 64: 55692 + 884 = 56576
Step 65: 56576 + 884 = 57460
Step 66: 57460 + 884 = 58344
Step 67: 58344 + 884 = 59228
Step 68: 59228 + 884 = 60112
Step 69: 60112 + 884 = 60996
Step 70: 60996 + 884 = 61880
Step 71: 61880 + 884 = 62764
Step 72: 62764 + 884 = 63648
Step 73: 63648 + 884 = 64532
Step 74: 64532 + 884 = 65416
Step 75: 65416 + 884 = 66300
Step 76: 66300 + 884 = 67184
Step 77: 67184 + 884 = 68068
Step 78: 68068 + 884 = 68952
Step 79: 68952 + 884 = 69836
Step 80: 69836 + 884 = 70720
Step 81: 70720 + 884 = 71604
Step 82: 71604 + 884 = 72488
Step 83: 72488 + 884 = 73372
Step 84: 73372 + 884 = 74256
Step 85: 74256 + 884 = 75140
Step 86: 75140 + 884 = 76024
Step 87: 76024 + 884 = 76908
Step 88: 76908 + 884 = 77792
Step 89: 77792 + 884 = 78676
Step 90: 78676 + 884 = 79560
Step 91: 79560 + 884 = 80444
Step 92: 80444 + 884 = 81328
Step 93: 81328 + 884 = 82212
Step 94: 82212 + 884 = 83096
Step 95: 83096 + 884 = 83980
Step 96: 83980 + 884 = 84864
Step 97: 84864 + 884 = 85748
Step 98: 85748 + 884 = 86632
Step 99: 86632 + 884 = 87516
Step 100: 87516 + 884 = 88400
Step 101: 88400 + 884 = 89284
Step 102: 89284 + 884 = 90168
Step 103: 90168 + 884 = 91052
Step 104: 91052 + 884 = 91936
Step 105: 91936 + 884 = 92820
Step 106: 92820 + 884 = 93704
Step 107: 93704 + 884 = 94588
Step 108: 94588 + 884 = 95472
Step 109: 95472 + 884 = 96356
Step 110: 96356 + 884 = 97240
Step 111: 97240 + 884 = 98124
Step 112: 98124 + 884 = 99008
Step 113: 99008 + 884 = 99892
Step 114: 99892 + 884 = 100776
Step 115: 100776 + 884 = 101660
Step 116: 101660 + 884 = 102544
Step 117: 102544 + 884 = 103428
Step 118: 103428 + 884 = 104312
Step 119: 104312 + 884 = 105196
Step 120: 105196 + 884 = 106080
Step 121: 106080 + 884 = 106964
Step 122: 106964 + 884 = 107848
Step 123: 107848 + 884 = 108732
Step 124: 108732 + 884 = 109616
Step 125: 109616 + 884 = 110500
Step 126: 110500 + 884 = 111384
Step 127: 111384 + 884 = 112268
Step 128: 112268 + 884 = 113152
Step 129: 113152 + 884 = 114036
Step 130: 114036 + 884 = 114920
Step 131: 114920 + 884 = 115804
Step 132: 115804 + 884 = 116688
Step 133: 116688 + 884 = 117572
Step 134: 117572 + 884 = 118456
Step 135: 118456 + 884 = 119340
Step 136: 119340 + 884 = 120224
Step 137: 120224 + 884 = 121108
Step 138: 121108 + 884 = 121992
Step 139: 121992 + 884 = 122876
Step 140: 122876 + 884 = 123760
Step 141: 123760 + 884 = 124644
Step 142: 124644 + 884 = 125528
Step 143: 125528 + 884 = 126412
Step 144: 126412 + 884 = 127296
Step 145: 127296 + 884 = 128180
Step 146: 128180 + 884 = 129064
Step 147: 129064 + 884 = 129948
Step 148: 129948 + 884 = 130832
Step 149: 130832 + 884 = 131716
Step 150: 131716 + 884 = 132600
Step 151: 132600 + 884 = 133484
Step 152: 133484 + 884 = 134368
Step 153: 134368 + 884 = 135252
Step 154: 135252 + 884 = 136136
Step 155: 136136 + 884 = 137020
Step 156: 137020 + 884 = 137904
Step 157: 137904 + 884 = 138788
Step 158: 138788 + 884 = 139672
Step 159: 139672 + 884 = 140556
Step 160: 140556 + 884 = 141440
Step 161: 141440 + 884 = 142324
Step 162: 142324 + 884 = 143208
Step 163: 143208 + 884 = 144092
Step 164: 144092 + 884 = 144976
Step 165: 144976 + 884 = 145860
Step 166: 145860 + 884 = 146744
Step 167: 146744 + 884 = 147628
Step 168: 147628 + 884 = 148512
Step 169: 148512 + 884 = 149396
Step 170: 149396 + 884 = 150280
Step 171: 150280 + 884 = 151164
Step 172: 151164 + 884 = 152048
Step 173: 152048 + 884 = 152932
Step 174: 152932 + 884 = 153816
Step 175: 153816 + 884 = 154700
Step 176: 154700 + 884 = 155584
Step 177: 155584 + 884 = 156468
Step 178: 156468 + 884 = 157352
Step 179: 157352 + 884 = 158236
Step 180: 158236 + 884 = 159120
Step 181: 159120 + 884 = 160004
Step 182: 160004 + 884 = 160888
Step 183: 160888 + 884 = 161772
Step 184: 161772 + 884 = 162656
Step 185: 162656 + 884 = 163540
Step 186: 163540 + 884 = 164424
Step 187: 164424 + 884 = 165308
Step 188: 165308 + 884 = 166192
Step 189: 166192 + 884 = 167076
Step 190: 167076 + 884 = 167960
Step 191: 167960 + 884 = 168844
Step 192: 168844 + 884 = 169728
Step 193: 169728 + 884 = 170612
Step 194: 170612 + 884 = 171496
Step 195: 171496 + 884 = 172380
Step 196: 172380 + 884 = 173264
Step 197: 173264 + 884 = 174148
Step 198: 174148 + 884 = 175032
Step 199: 175032 + 884 = 175916
Step 200: 175916 + 884 = 176800
Step 201: 176800 + 884 = 177684
Step 202: 177684 + 884 = 178568
Step 203: 178568 + 884 = 179452
Step 204: 179452 + 884 = 180336
Step 205: 180336 + 884 = 181220
Step 206: 181220 + 884 = 182104
Step 207: 182104 + 884 = 182988
Step 208: 182988 + 884 = 183872
Step 209: 183872 + 884 = 184756
Step 210: 184756 + 884 = 185640
Step 211: 185640 + 884 = 186524
Step 212: 186524 + 884 = 187408
Step 213: 187408 + 884 = 188292
Step 214: 188292 + 884 = 189176
Step 215: 189176 + 884 = 190060
Step 216: 190060 + 884 = 190944
Step 217: 190944 + 884 = 191828
Step 218: 191828 + 884 = 192712
Step 219: 192712 + 884 = 193596
Step 220: 193596 + 884 = 194480
Step 221: 194480 + 884 = 195364
Step 222: 195364 + 884 = 196248
Step 223: 196248 + 884 = 197132
Step 224: 197132 + 884 = 198016
Step 225: 198016 + 884 = 198900
Step 226: 198900 + 884 = 199784
Step 227: 199784 + 884 = 200668
Step 228: 200668 + 884 = 201552
Step 229: 201552 + 884 = 202436
Step 230: 202436 + 884 = 203320
Step 231: 203320 + 884 = 204204
Step 232: 204204 + 884 = 205088
Step 233: 205088 + 884 = 205972
Step 234: 205972 + 884 = 206856
Step 235: 206856 + 884 = 207740
Step 236: 207740 + 884 = 208624
Step 237: 208624 + 884 = 209508
Step 238: 209508 + 884 = 210392
Step 239: 210392 + 884 = 211276
Step 240: 211276 + 884 = 212160
Step 241: 212160 + 884 = 213044
Step 242: 213044 + 884 = 213928
Step 243: 213928 + 884 = 214812
Step 244: 214812 + 884 = 215696
Step 245: 215696 + 884 = 216580
Step 246: 216580 + 884 = 217464
Step 247: 217464 + 884 = 218348
Step 248: 218348 + 884 = 219232
Step 249: 219232 + 884 = 220116
Step 250: 220116 + 884 = 221000
Step 251: 221000 + 884 = 221884
Step 252: 221884 + 884 = 222768
Step 253: 222768 + 884 = 223652
Step 254: 223652 + 884 = 224536
Step 255: 224536 + 884 = 225420
Step 256: 225420 + 884 = 226304
Step 257: 226304 + 884 = 227188
Step 258: 227188 + 884 = 228072
Step 259: 228072 + 884 = 228956
Step 260: 228956 + 884 = 229840
Step 261: 229840 + 884 = 230724
Step 262: 230724 + 884 = 231608
Step 263: 231608 + 884 = 232492
Step 264: 232492 + 884 = 233376
Step 265: 233376 + 884 = 234260
Step 266: 234260 + 884 = 235144
Step 267: 235144 + 884 = 236028
Step 268: 236028 + 884 = 236912
Step 269: 236912 + 884 = 237796
Step 270: 237796 + 884 = 238680
Step 271: 238680 + 884 = 239564
Step 272: 239564 + 884 = 240448
Step 273: 240448 + 884 = 241332
Step 274: 241332 + 884 = 242216
Step 275: 242216 + 884 = 243100
Step 276: 243100 + 884 = 243984
Step 277: 243984 + 884 = 244868
Step 278: 244868 + 884 = 245752
Step 279: 245752 + 884 = 246636
Step 280: 246636 + 884 = 247520
Step 281: 247520 + 884 = 248404
Step 282: 248404 + 884 = 249288
Step 283: 249288 + 884 = 250172
Step 284: 250172 + 884 = 251056
Step 285: 251056 + 884 = 251940
Step 286: 251940 + 884 = 252824
Step 287: 252824 + 884 = 253708
Step 288: 253708 + 884 = 254592
Step 289: 254592 + 884 = 255476
Step 290: 255476 + 884 = 256360
Step 291: 256360 + 884 = 257244
Step 292: 257244 + 884 = 258128
Step 293: 258128 + 884 = 259012
Step 294: 259012 + 884 = 259896
Step 295: 259896 + 884 = 260780
Step 296: 260780 + 884 = 261664
Step 297: 261664 + 884 = 262548
Step 298: 262548 + 884 = 263432
Step 299: 263432 + 884 = 264316
Step 300: 264316 + 884 = 265200
Step 301: 265200 + 884 = 266084
Step 302: 266084 + 884 = 266968
Step 303: 266968 + 884 = 267852
Step 304: 267852 + 884 = 268736
Step 305: 268736 + 884 = 269620
Step 306: 269620 + 884 = 270504
Step 307: 270504 + 884 = 271388
Step 308: 271388 + 884 = 272272
Step 309: 272272 + 884 = 273156
Step 310: 273156 + 884 = 274040
Step 311: 274040 + 884 = 274924
Step 312: 274924 + 884 = 275808
Step 313: 275808 + 884 = 276692
Step 314: 276692 + 884 = 277576
Step 315: 277576 + 884 = 278460
Step 316: 278460 + 884 = 279344
Step 317: 279344 + 884 = 280228
Step 318: 280228 + 884 = 281112
Step 319: 281112 + 884 = 281996
Step 320: 281996 + 884 = 282880
Step 321: 282880 + 884 = 283764
Step 322: 283764 + 884 = 284648
Step 323: 284648 + 884 = 285532
Step 324: 285532 + 884 = 286416
Step 325: 286416 + 884 = 287300
Step 326: 287300 + 884 = 288184
Step 327: 288184 + 884 = 289068
Step 328: 289068 + 884 = 289952
Step 329: 289952 + 884 = 290836
Step 330: 290836 + 884 = 291720
Step 331: 291720 + 884 = 292604
Step 332: 292604 + 884 = 293488
Step 333: 293488 + 884 = 294372
Step 334: 294372 + 884 = 295256
Step 335: 295256 + 884 = 296140
Step 336: 296140 + 884 = 297024
Step 337: 297024 + 884 = 297908
Step 338: 297908 + 884 = 298792
Step 339: 298792 + 884 = 299676
Step 340: 299676 + 884 = 300560
Step 341: 300560 + 884 = 301444
Step 342: 301444 + 884 = 302328
Step 343: 302328 + 884 = 303212
Step 344: 303212 + 884 = 304096
Step 345: 304096 + 884 = 304980
Step 346: 304980 + 884 = 305864
Step 347: 305864 + 884 = 306748
Step 348: 306748 + 884 = 307632
Step 349: 307632 + 884 = 308516
Step 350: 308516 + 884 = 309400
Step 351: 309400 + 884 = 310284
Step 352: 310284 + 884 = 311168
Step 353: 311168 + 884 = 312052
Step 354: 312052 + 884 = 312936
Step 355: 312936 + 884 = 313820
Step 356: 313820 + 884 = 314704
Step 357: 314704 + 884 = 315588
Step 358: 315588 + 884 = 316472
Step 359: 316472 + 884 = 317356
Step 360: 317356 + 884 = 318240
Step 361: 318240 + 884 = 319124
Step 362: 319124 + 884 = 320008
Step 363: 320008 + 884 = 320892
Step 364: 320892 + 884 = 321776
Step 365: 321776 + 884 = 322660
Step 366: 322660 + 884 = 323544
Step 367: 323544 + 884 = 324428
Step 368: 324428 + 884 = 325312
Step 369: 325312 + 884 = 326196
Step 370: 326196 + 884 = 327080
Step 371: 327080 + 884 = 327964
Step 372: 327964 + 884 = 328848
Step 373: 328848 + 884 = 329732
Step 374: 329732 + 884 = 330616
Step 375: 330616 + 884 = 331500
Step 376: 331500 + 884 = 332384
Step 377: 332384 + 884 = 333268
Step 378: 333268 + 884 = 334152
Step 379: 334152 + 884 = 335036
Step 380: 335036 + 884 = 335920
Step 381: 335920 + 884 = 336804
Step 382: 336804 + 884 = 337688
Step 383: 337688 + 884 = 338572
Step 384: 338572 + 884 = 339456
Step 385: 339456 + 884 = 340340
Step 386: 340340 + 884 = 341224
Step 387: 341224 + 884 = 342108
Step 388: 342108 + 884 = 342992
Step 389: 342992 + 884 = 343876
Step 390: 343876 + 884 = 344760
Step 391: 344760 + 884 = 345644
Step 392: 345644 + 884 = 346528
Step 393: 346528 + 884 = 347412
Step 394: 347412 + 884 = 348296
Step 395: 348296 + 884 = 349180
Step 396: 349180 + 884 = 350064
Step 397: 350064 + 884 = 350948
Step 398: 350948 + 884 = 351832
Step 399: 351832 + 884 = 352716
Step 400: 352716 + 884 = 353600
Step 401: 353600 + 884 = 354484
Step 402: 354484 + 884 = 355368
Step 403: 355368 + 884 = 356252
Step 404: 356252 + 884 = 357136
Step 405: 357136 + 884 = 358020
Step 406: 358020 + 884 = 358904
Step 407: 358904 + 884 = 359788
Step 408: 359788 + 884 = 360672
Step 409: 360672 + 884 = 361556
Step 410: 361556 + 884 = 362440
Step 411: 362440 + 884 = 363324
Step 412: 363324 + 884 = 364208
Step 413: 364208 + 884 = 365092
Step 414: 365092 + 884 = 365976
Step 415: 365976 + 884 = 366860
Step 416: 366860 + 884 = 367744
Step 417: 367744 + 884 = 368628
Step 418: 368628 + 884 = 369512
Step 419: 369512 + 884 = 370396
Step 420: 370396 + 884 = 371280
Step 421: 371280 + 884 = 372164
Step 422: 372164 + 884 = 373048
Step 423: 373048 + 884 = 373932
Step 424: 373932 + 884 = 374816
Step 425: 374816 + 884 = 375700
Step 426: 375700 + 884 = 376584
Step 427: 376584 + 884 = 377468
Step 428: 377468 + 884 = 378352
Step 429: 378352 + 884 = 379236
Step 430: 379236 + 884 = 380120
Step 431: 380120 + 884 = 381004
Step 432: 381004 + 884 = 381888
Step 433: 381888 + 884 = 382772
Step 434: 382772 + 884 = 383656
Step 435: 383656 + 884 = 384540
Step 436: 384540 + 884 = 385424
Step 437: 385424 + 884 = 386308
Step 438: 386308 + 884 = 387192
Step 439: 387192 + 884 = 388076
Step 440: 388076 + 884 = 388960
Step 441: 388960 + 884 = 389844
Step 442: 389844 + 884 = 390728
Step 443: 390728 + 884 = 391612
Step 444: 391612 + 884 = 392496
Step 445: 392496 + 884 = 393380
Step 446: 393380 + 884 = 394264
Step 447: 394264 + 884 = 395148
Step 448: 395148 + 884 = 396032
Step 449: 396032 + 884 = 396916
Step 450: 396916 + 884 = 397800
Step 451: 397800 + 884 = 398684
Step 452: 398684 + 884 = 399568
Step 453: 399568 + 884 = 400452
Step 454: 400452 + 884 = 401336
Step 455: 401336 + 884 = 402220

So, 884*455 = 402220