Let's roll up our sleeves and solve this. We have 830 and we're going to multiply it by 393, essentially adding 830 to itself 393 times.
Step 1: 0 + 830 = 830
Step 2: 830 + 830 = 1660
Step 3: 1660 + 830 = 2490
Step 4: 2490 + 830 = 3320
Step 5: 3320 + 830 = 4150
Step 6: 4150 + 830 = 4980
Step 7: 4980 + 830 = 5810
Step 8: 5810 + 830 = 6640
Step 9: 6640 + 830 = 7470
Step 10: 7470 + 830 = 8300
Step 11: 8300 + 830 = 9130
Step 12: 9130 + 830 = 9960
Step 13: 9960 + 830 = 10790
Step 14: 10790 + 830 = 11620
Step 15: 11620 + 830 = 12450
Step 16: 12450 + 830 = 13280
Step 17: 13280 + 830 = 14110
Step 18: 14110 + 830 = 14940
Step 19: 14940 + 830 = 15770
Step 20: 15770 + 830 = 16600
Step 21: 16600 + 830 = 17430
Step 22: 17430 + 830 = 18260
Step 23: 18260 + 830 = 19090
Step 24: 19090 + 830 = 19920
Step 25: 19920 + 830 = 20750
Step 26: 20750 + 830 = 21580
Step 27: 21580 + 830 = 22410
Step 28: 22410 + 830 = 23240
Step 29: 23240 + 830 = 24070
Step 30: 24070 + 830 = 24900
Step 31: 24900 + 830 = 25730
Step 32: 25730 + 830 = 26560
Step 33: 26560 + 830 = 27390
Step 34: 27390 + 830 = 28220
Step 35: 28220 + 830 = 29050
Step 36: 29050 + 830 = 29880
Step 37: 29880 + 830 = 30710
Step 38: 30710 + 830 = 31540
Step 39: 31540 + 830 = 32370
Step 40: 32370 + 830 = 33200
Step 41: 33200 + 830 = 34030
Step 42: 34030 + 830 = 34860
Step 43: 34860 + 830 = 35690
Step 44: 35690 + 830 = 36520
Step 45: 36520 + 830 = 37350
Step 46: 37350 + 830 = 38180
Step 47: 38180 + 830 = 39010
Step 48: 39010 + 830 = 39840
Step 49: 39840 + 830 = 40670
Step 50: 40670 + 830 = 41500
Step 51: 41500 + 830 = 42330
Step 52: 42330 + 830 = 43160
Step 53: 43160 + 830 = 43990
Step 54: 43990 + 830 = 44820
Step 55: 44820 + 830 = 45650
Step 56: 45650 + 830 = 46480
Step 57: 46480 + 830 = 47310
Step 58: 47310 + 830 = 48140
Step 59: 48140 + 830 = 48970
Step 60: 48970 + 830 = 49800
Step 61: 49800 + 830 = 50630
Step 62: 50630 + 830 = 51460
Step 63: 51460 + 830 = 52290
Step 64: 52290 + 830 = 53120
Step 65: 53120 + 830 = 53950
Step 66: 53950 + 830 = 54780
Step 67: 54780 + 830 = 55610
Step 68: 55610 + 830 = 56440
Step 69: 56440 + 830 = 57270
Step 70: 57270 + 830 = 58100
Step 71: 58100 + 830 = 58930
Step 72: 58930 + 830 = 59760
Step 73: 59760 + 830 = 60590
Step 74: 60590 + 830 = 61420
Step 75: 61420 + 830 = 62250
Step 76: 62250 + 830 = 63080
Step 77: 63080 + 830 = 63910
Step 78: 63910 + 830 = 64740
Step 79: 64740 + 830 = 65570
Step 80: 65570 + 830 = 66400
Step 81: 66400 + 830 = 67230
Step 82: 67230 + 830 = 68060
Step 83: 68060 + 830 = 68890
Step 84: 68890 + 830 = 69720
Step 85: 69720 + 830 = 70550
Step 86: 70550 + 830 = 71380
Step 87: 71380 + 830 = 72210
Step 88: 72210 + 830 = 73040
Step 89: 73040 + 830 = 73870
Step 90: 73870 + 830 = 74700
Step 91: 74700 + 830 = 75530
Step 92: 75530 + 830 = 76360
Step 93: 76360 + 830 = 77190
Step 94: 77190 + 830 = 78020
Step 95: 78020 + 830 = 78850
Step 96: 78850 + 830 = 79680
Step 97: 79680 + 830 = 80510
Step 98: 80510 + 830 = 81340
Step 99: 81340 + 830 = 82170
Step 100: 82170 + 830 = 83000
Step 101: 83000 + 830 = 83830
Step 102: 83830 + 830 = 84660
Step 103: 84660 + 830 = 85490
Step 104: 85490 + 830 = 86320
Step 105: 86320 + 830 = 87150
Step 106: 87150 + 830 = 87980
Step 107: 87980 + 830 = 88810
Step 108: 88810 + 830 = 89640
Step 109: 89640 + 830 = 90470
Step 110: 90470 + 830 = 91300
Step 111: 91300 + 830 = 92130
Step 112: 92130 + 830 = 92960
Step 113: 92960 + 830 = 93790
Step 114: 93790 + 830 = 94620
Step 115: 94620 + 830 = 95450
Step 116: 95450 + 830 = 96280
Step 117: 96280 + 830 = 97110
Step 118: 97110 + 830 = 97940
Step 119: 97940 + 830 = 98770
Step 120: 98770 + 830 = 99600
Step 121: 99600 + 830 = 100430
Step 122: 100430 + 830 = 101260
Step 123: 101260 + 830 = 102090
Step 124: 102090 + 830 = 102920
Step 125: 102920 + 830 = 103750
Step 126: 103750 + 830 = 104580
Step 127: 104580 + 830 = 105410
Step 128: 105410 + 830 = 106240
Step 129: 106240 + 830 = 107070
Step 130: 107070 + 830 = 107900
Step 131: 107900 + 830 = 108730
Step 132: 108730 + 830 = 109560
Step 133: 109560 + 830 = 110390
Step 134: 110390 + 830 = 111220
Step 135: 111220 + 830 = 112050
Step 136: 112050 + 830 = 112880
Step 137: 112880 + 830 = 113710
Step 138: 113710 + 830 = 114540
Step 139: 114540 + 830 = 115370
Step 140: 115370 + 830 = 116200
Step 141: 116200 + 830 = 117030
Step 142: 117030 + 830 = 117860
Step 143: 117860 + 830 = 118690
Step 144: 118690 + 830 = 119520
Step 145: 119520 + 830 = 120350
Step 146: 120350 + 830 = 121180
Step 147: 121180 + 830 = 122010
Step 148: 122010 + 830 = 122840
Step 149: 122840 + 830 = 123670
Step 150: 123670 + 830 = 124500
Step 151: 124500 + 830 = 125330
Step 152: 125330 + 830 = 126160
Step 153: 126160 + 830 = 126990
Step 154: 126990 + 830 = 127820
Step 155: 127820 + 830 = 128650
Step 156: 128650 + 830 = 129480
Step 157: 129480 + 830 = 130310
Step 158: 130310 + 830 = 131140
Step 159: 131140 + 830 = 131970
Step 160: 131970 + 830 = 132800
Step 161: 132800 + 830 = 133630
Step 162: 133630 + 830 = 134460
Step 163: 134460 + 830 = 135290
Step 164: 135290 + 830 = 136120
Step 165: 136120 + 830 = 136950
Step 166: 136950 + 830 = 137780
Step 167: 137780 + 830 = 138610
Step 168: 138610 + 830 = 139440
Step 169: 139440 + 830 = 140270
Step 170: 140270 + 830 = 141100
Step 171: 141100 + 830 = 141930
Step 172: 141930 + 830 = 142760
Step 173: 142760 + 830 = 143590
Step 174: 143590 + 830 = 144420
Step 175: 144420 + 830 = 145250
Step 176: 145250 + 830 = 146080
Step 177: 146080 + 830 = 146910
Step 178: 146910 + 830 = 147740
Step 179: 147740 + 830 = 148570
Step 180: 148570 + 830 = 149400
Step 181: 149400 + 830 = 150230
Step 182: 150230 + 830 = 151060
Step 183: 151060 + 830 = 151890
Step 184: 151890 + 830 = 152720
Step 185: 152720 + 830 = 153550
Step 186: 153550 + 830 = 154380
Step 187: 154380 + 830 = 155210
Step 188: 155210 + 830 = 156040
Step 189: 156040 + 830 = 156870
Step 190: 156870 + 830 = 157700
Step 191: 157700 + 830 = 158530
Step 192: 158530 + 830 = 159360
Step 193: 159360 + 830 = 160190
Step 194: 160190 + 830 = 161020
Step 195: 161020 + 830 = 161850
Step 196: 161850 + 830 = 162680
Step 197: 162680 + 830 = 163510
Step 198: 163510 + 830 = 164340
Step 199: 164340 + 830 = 165170
Step 200: 165170 + 830 = 166000
Step 201: 166000 + 830 = 166830
Step 202: 166830 + 830 = 167660
Step 203: 167660 + 830 = 168490
Step 204: 168490 + 830 = 169320
Step 205: 169320 + 830 = 170150
Step 206: 170150 + 830 = 170980
Step 207: 170980 + 830 = 171810
Step 208: 171810 + 830 = 172640
Step 209: 172640 + 830 = 173470
Step 210: 173470 + 830 = 174300
Step 211: 174300 + 830 = 175130
Step 212: 175130 + 830 = 175960
Step 213: 175960 + 830 = 176790
Step 214: 176790 + 830 = 177620
Step 215: 177620 + 830 = 178450
Step 216: 178450 + 830 = 179280
Step 217: 179280 + 830 = 180110
Step 218: 180110 + 830 = 180940
Step 219: 180940 + 830 = 181770
Step 220: 181770 + 830 = 182600
Step 221: 182600 + 830 = 183430
Step 222: 183430 + 830 = 184260
Step 223: 184260 + 830 = 185090
Step 224: 185090 + 830 = 185920
Step 225: 185920 + 830 = 186750
Step 226: 186750 + 830 = 187580
Step 227: 187580 + 830 = 188410
Step 228: 188410 + 830 = 189240
Step 229: 189240 + 830 = 190070
Step 230: 190070 + 830 = 190900
Step 231: 190900 + 830 = 191730
Step 232: 191730 + 830 = 192560
Step 233: 192560 + 830 = 193390
Step 234: 193390 + 830 = 194220
Step 235: 194220 + 830 = 195050
Step 236: 195050 + 830 = 195880
Step 237: 195880 + 830 = 196710
Step 238: 196710 + 830 = 197540
Step 239: 197540 + 830 = 198370
Step 240: 198370 + 830 = 199200
Step 241: 199200 + 830 = 200030
Step 242: 200030 + 830 = 200860
Step 243: 200860 + 830 = 201690
Step 244: 201690 + 830 = 202520
Step 245: 202520 + 830 = 203350
Step 246: 203350 + 830 = 204180
Step 247: 204180 + 830 = 205010
Step 248: 205010 + 830 = 205840
Step 249: 205840 + 830 = 206670
Step 250: 206670 + 830 = 207500
Step 251: 207500 + 830 = 208330
Step 252: 208330 + 830 = 209160
Step 253: 209160 + 830 = 209990
Step 254: 209990 + 830 = 210820
Step 255: 210820 + 830 = 211650
Step 256: 211650 + 830 = 212480
Step 257: 212480 + 830 = 213310
Step 258: 213310 + 830 = 214140
Step 259: 214140 + 830 = 214970
Step 260: 214970 + 830 = 215800
Step 261: 215800 + 830 = 216630
Step 262: 216630 + 830 = 217460
Step 263: 217460 + 830 = 218290
Step 264: 218290 + 830 = 219120
Step 265: 219120 + 830 = 219950
Step 266: 219950 + 830 = 220780
Step 267: 220780 + 830 = 221610
Step 268: 221610 + 830 = 222440
Step 269: 222440 + 830 = 223270
Step 270: 223270 + 830 = 224100
Step 271: 224100 + 830 = 224930
Step 272: 224930 + 830 = 225760
Step 273: 225760 + 830 = 226590
Step 274: 226590 + 830 = 227420
Step 275: 227420 + 830 = 228250
Step 276: 228250 + 830 = 229080
Step 277: 229080 + 830 = 229910
Step 278: 229910 + 830 = 230740
Step 279: 230740 + 830 = 231570
Step 280: 231570 + 830 = 232400
Step 281: 232400 + 830 = 233230
Step 282: 233230 + 830 = 234060
Step 283: 234060 + 830 = 234890
Step 284: 234890 + 830 = 235720
Step 285: 235720 + 830 = 236550
Step 286: 236550 + 830 = 237380
Step 287: 237380 + 830 = 238210
Step 288: 238210 + 830 = 239040
Step 289: 239040 + 830 = 239870
Step 290: 239870 + 830 = 240700
Step 291: 240700 + 830 = 241530
Step 292: 241530 + 830 = 242360
Step 293: 242360 + 830 = 243190
Step 294: 243190 + 830 = 244020
Step 295: 244020 + 830 = 244850
Step 296: 244850 + 830 = 245680
Step 297: 245680 + 830 = 246510
Step 298: 246510 + 830 = 247340
Step 299: 247340 + 830 = 248170
Step 300: 248170 + 830 = 249000
Step 301: 249000 + 830 = 249830
Step 302: 249830 + 830 = 250660
Step 303: 250660 + 830 = 251490
Step 304: 251490 + 830 = 252320
Step 305: 252320 + 830 = 253150
Step 306: 253150 + 830 = 253980
Step 307: 253980 + 830 = 254810
Step 308: 254810 + 830 = 255640
Step 309: 255640 + 830 = 256470
Step 310: 256470 + 830 = 257300
Step 311: 257300 + 830 = 258130
Step 312: 258130 + 830 = 258960
Step 313: 258960 + 830 = 259790
Step 314: 259790 + 830 = 260620
Step 315: 260620 + 830 = 261450
Step 316: 261450 + 830 = 262280
Step 317: 262280 + 830 = 263110
Step 318: 263110 + 830 = 263940
Step 319: 263940 + 830 = 264770
Step 320: 264770 + 830 = 265600
Step 321: 265600 + 830 = 266430
Step 322: 266430 + 830 = 267260
Step 323: 267260 + 830 = 268090
Step 324: 268090 + 830 = 268920
Step 325: 268920 + 830 = 269750
Step 326: 269750 + 830 = 270580
Step 327: 270580 + 830 = 271410
Step 328: 271410 + 830 = 272240
Step 329: 272240 + 830 = 273070
Step 330: 273070 + 830 = 273900
Step 331: 273900 + 830 = 274730
Step 332: 274730 + 830 = 275560
Step 333: 275560 + 830 = 276390
Step 334: 276390 + 830 = 277220
Step 335: 277220 + 830 = 278050
Step 336: 278050 + 830 = 278880
Step 337: 278880 + 830 = 279710
Step 338: 279710 + 830 = 280540
Step 339: 280540 + 830 = 281370
Step 340: 281370 + 830 = 282200
Step 341: 282200 + 830 = 283030
Step 342: 283030 + 830 = 283860
Step 343: 283860 + 830 = 284690
Step 344: 284690 + 830 = 285520
Step 345: 285520 + 830 = 286350
Step 346: 286350 + 830 = 287180
Step 347: 287180 + 830 = 288010
Step 348: 288010 + 830 = 288840
Step 349: 288840 + 830 = 289670
Step 350: 289670 + 830 = 290500
Step 351: 290500 + 830 = 291330
Step 352: 291330 + 830 = 292160
Step 353: 292160 + 830 = 292990
Step 354: 292990 + 830 = 293820
Step 355: 293820 + 830 = 294650
Step 356: 294650 + 830 = 295480
Step 357: 295480 + 830 = 296310
Step 358: 296310 + 830 = 297140
Step 359: 297140 + 830 = 297970
Step 360: 297970 + 830 = 298800
Step 361: 298800 + 830 = 299630
Step 362: 299630 + 830 = 300460
Step 363: 300460 + 830 = 301290
Step 364: 301290 + 830 = 302120
Step 365: 302120 + 830 = 302950
Step 366: 302950 + 830 = 303780
Step 367: 303780 + 830 = 304610
Step 368: 304610 + 830 = 305440
Step 369: 305440 + 830 = 306270
Step 370: 306270 + 830 = 307100
Step 371: 307100 + 830 = 307930
Step 372: 307930 + 830 = 308760
Step 373: 308760 + 830 = 309590
Step 374: 309590 + 830 = 310420
Step 375: 310420 + 830 = 311250
Step 376: 311250 + 830 = 312080
Step 377: 312080 + 830 = 312910
Step 378: 312910 + 830 = 313740
Step 379: 313740 + 830 = 314570
Step 380: 314570 + 830 = 315400
Step 381: 315400 + 830 = 316230
Step 382: 316230 + 830 = 317060
Step 383: 317060 + 830 = 317890
Step 384: 317890 + 830 = 318720
Step 385: 318720 + 830 = 319550
Step 386: 319550 + 830 = 320380
Step 387: 320380 + 830 = 321210
Step 388: 321210 + 830 = 322040
Step 389: 322040 + 830 = 322870
Step 390: 322870 + 830 = 323700
Step 391: 323700 + 830 = 324530
Step 392: 324530 + 830 = 325360
Step 393: 325360 + 830 = 326190

So, 830*393 = 326190