OK, let's work through this together. We're starting with 742 and we're going to multiply it by 419, which means we add 742 to itself 419 times.
Step 1: 0 + 742 = 742
Step 2: 742 + 742 = 1484
Step 3: 1484 + 742 = 2226
Step 4: 2226 + 742 = 2968
Step 5: 2968 + 742 = 3710
Step 6: 3710 + 742 = 4452
Step 7: 4452 + 742 = 5194
Step 8: 5194 + 742 = 5936
Step 9: 5936 + 742 = 6678
Step 10: 6678 + 742 = 7420
Step 11: 7420 + 742 = 8162
Step 12: 8162 + 742 = 8904
Step 13: 8904 + 742 = 9646
Step 14: 9646 + 742 = 10388
Step 15: 10388 + 742 = 11130
Step 16: 11130 + 742 = 11872
Step 17: 11872 + 742 = 12614
Step 18: 12614 + 742 = 13356
Step 19: 13356 + 742 = 14098
Step 20: 14098 + 742 = 14840
Step 21: 14840 + 742 = 15582
Step 22: 15582 + 742 = 16324
Step 23: 16324 + 742 = 17066
Step 24: 17066 + 742 = 17808
Step 25: 17808 + 742 = 18550
Step 26: 18550 + 742 = 19292
Step 27: 19292 + 742 = 20034
Step 28: 20034 + 742 = 20776
Step 29: 20776 + 742 = 21518
Step 30: 21518 + 742 = 22260
Step 31: 22260 + 742 = 23002
Step 32: 23002 + 742 = 23744
Step 33: 23744 + 742 = 24486
Step 34: 24486 + 742 = 25228
Step 35: 25228 + 742 = 25970
Step 36: 25970 + 742 = 26712
Step 37: 26712 + 742 = 27454
Step 38: 27454 + 742 = 28196
Step 39: 28196 + 742 = 28938
Step 40: 28938 + 742 = 29680
Step 41: 29680 + 742 = 30422
Step 42: 30422 + 742 = 31164
Step 43: 31164 + 742 = 31906
Step 44: 31906 + 742 = 32648
Step 45: 32648 + 742 = 33390
Step 46: 33390 + 742 = 34132
Step 47: 34132 + 742 = 34874
Step 48: 34874 + 742 = 35616
Step 49: 35616 + 742 = 36358
Step 50: 36358 + 742 = 37100
Step 51: 37100 + 742 = 37842
Step 52: 37842 + 742 = 38584
Step 53: 38584 + 742 = 39326
Step 54: 39326 + 742 = 40068
Step 55: 40068 + 742 = 40810
Step 56: 40810 + 742 = 41552
Step 57: 41552 + 742 = 42294
Step 58: 42294 + 742 = 43036
Step 59: 43036 + 742 = 43778
Step 60: 43778 + 742 = 44520
Step 61: 44520 + 742 = 45262
Step 62: 45262 + 742 = 46004
Step 63: 46004 + 742 = 46746
Step 64: 46746 + 742 = 47488
Step 65: 47488 + 742 = 48230
Step 66: 48230 + 742 = 48972
Step 67: 48972 + 742 = 49714
Step 68: 49714 + 742 = 50456
Step 69: 50456 + 742 = 51198
Step 70: 51198 + 742 = 51940
Step 71: 51940 + 742 = 52682
Step 72: 52682 + 742 = 53424
Step 73: 53424 + 742 = 54166
Step 74: 54166 + 742 = 54908
Step 75: 54908 + 742 = 55650
Step 76: 55650 + 742 = 56392
Step 77: 56392 + 742 = 57134
Step 78: 57134 + 742 = 57876
Step 79: 57876 + 742 = 58618
Step 80: 58618 + 742 = 59360
Step 81: 59360 + 742 = 60102
Step 82: 60102 + 742 = 60844
Step 83: 60844 + 742 = 61586
Step 84: 61586 + 742 = 62328
Step 85: 62328 + 742 = 63070
Step 86: 63070 + 742 = 63812
Step 87: 63812 + 742 = 64554
Step 88: 64554 + 742 = 65296
Step 89: 65296 + 742 = 66038
Step 90: 66038 + 742 = 66780
Step 91: 66780 + 742 = 67522
Step 92: 67522 + 742 = 68264
Step 93: 68264 + 742 = 69006
Step 94: 69006 + 742 = 69748
Step 95: 69748 + 742 = 70490
Step 96: 70490 + 742 = 71232
Step 97: 71232 + 742 = 71974
Step 98: 71974 + 742 = 72716
Step 99: 72716 + 742 = 73458
Step 100: 73458 + 742 = 74200
Step 101: 74200 + 742 = 74942
Step 102: 74942 + 742 = 75684
Step 103: 75684 + 742 = 76426
Step 104: 76426 + 742 = 77168
Step 105: 77168 + 742 = 77910
Step 106: 77910 + 742 = 78652
Step 107: 78652 + 742 = 79394
Step 108: 79394 + 742 = 80136
Step 109: 80136 + 742 = 80878
Step 110: 80878 + 742 = 81620
Step 111: 81620 + 742 = 82362
Step 112: 82362 + 742 = 83104
Step 113: 83104 + 742 = 83846
Step 114: 83846 + 742 = 84588
Step 115: 84588 + 742 = 85330
Step 116: 85330 + 742 = 86072
Step 117: 86072 + 742 = 86814
Step 118: 86814 + 742 = 87556
Step 119: 87556 + 742 = 88298
Step 120: 88298 + 742 = 89040
Step 121: 89040 + 742 = 89782
Step 122: 89782 + 742 = 90524
Step 123: 90524 + 742 = 91266
Step 124: 91266 + 742 = 92008
Step 125: 92008 + 742 = 92750
Step 126: 92750 + 742 = 93492
Step 127: 93492 + 742 = 94234
Step 128: 94234 + 742 = 94976
Step 129: 94976 + 742 = 95718
Step 130: 95718 + 742 = 96460
Step 131: 96460 + 742 = 97202
Step 132: 97202 + 742 = 97944
Step 133: 97944 + 742 = 98686
Step 134: 98686 + 742 = 99428
Step 135: 99428 + 742 = 100170
Step 136: 100170 + 742 = 100912
Step 137: 100912 + 742 = 101654
Step 138: 101654 + 742 = 102396
Step 139: 102396 + 742 = 103138
Step 140: 103138 + 742 = 103880
Step 141: 103880 + 742 = 104622
Step 142: 104622 + 742 = 105364
Step 143: 105364 + 742 = 106106
Step 144: 106106 + 742 = 106848
Step 145: 106848 + 742 = 107590
Step 146: 107590 + 742 = 108332
Step 147: 108332 + 742 = 109074
Step 148: 109074 + 742 = 109816
Step 149: 109816 + 742 = 110558
Step 150: 110558 + 742 = 111300
Step 151: 111300 + 742 = 112042
Step 152: 112042 + 742 = 112784
Step 153: 112784 + 742 = 113526
Step 154: 113526 + 742 = 114268
Step 155: 114268 + 742 = 115010
Step 156: 115010 + 742 = 115752
Step 157: 115752 + 742 = 116494
Step 158: 116494 + 742 = 117236
Step 159: 117236 + 742 = 117978
Step 160: 117978 + 742 = 118720
Step 161: 118720 + 742 = 119462
Step 162: 119462 + 742 = 120204
Step 163: 120204 + 742 = 120946
Step 164: 120946 + 742 = 121688
Step 165: 121688 + 742 = 122430
Step 166: 122430 + 742 = 123172
Step 167: 123172 + 742 = 123914
Step 168: 123914 + 742 = 124656
Step 169: 124656 + 742 = 125398
Step 170: 125398 + 742 = 126140
Step 171: 126140 + 742 = 126882
Step 172: 126882 + 742 = 127624
Step 173: 127624 + 742 = 128366
Step 174: 128366 + 742 = 129108
Step 175: 129108 + 742 = 129850
Step 176: 129850 + 742 = 130592
Step 177: 130592 + 742 = 131334
Step 178: 131334 + 742 = 132076
Step 179: 132076 + 742 = 132818
Step 180: 132818 + 742 = 133560
Step 181: 133560 + 742 = 134302
Step 182: 134302 + 742 = 135044
Step 183: 135044 + 742 = 135786
Step 184: 135786 + 742 = 136528
Step 185: 136528 + 742 = 137270
Step 186: 137270 + 742 = 138012
Step 187: 138012 + 742 = 138754
Step 188: 138754 + 742 = 139496
Step 189: 139496 + 742 = 140238
Step 190: 140238 + 742 = 140980
Step 191: 140980 + 742 = 141722
Step 192: 141722 + 742 = 142464
Step 193: 142464 + 742 = 143206
Step 194: 143206 + 742 = 143948
Step 195: 143948 + 742 = 144690
Step 196: 144690 + 742 = 145432
Step 197: 145432 + 742 = 146174
Step 198: 146174 + 742 = 146916
Step 199: 146916 + 742 = 147658
Step 200: 147658 + 742 = 148400
Step 201: 148400 + 742 = 149142
Step 202: 149142 + 742 = 149884
Step 203: 149884 + 742 = 150626
Step 204: 150626 + 742 = 151368
Step 205: 151368 + 742 = 152110
Step 206: 152110 + 742 = 152852
Step 207: 152852 + 742 = 153594
Step 208: 153594 + 742 = 154336
Step 209: 154336 + 742 = 155078
Step 210: 155078 + 742 = 155820
Step 211: 155820 + 742 = 156562
Step 212: 156562 + 742 = 157304
Step 213: 157304 + 742 = 158046
Step 214: 158046 + 742 = 158788
Step 215: 158788 + 742 = 159530
Step 216: 159530 + 742 = 160272
Step 217: 160272 + 742 = 161014
Step 218: 161014 + 742 = 161756
Step 219: 161756 + 742 = 162498
Step 220: 162498 + 742 = 163240
Step 221: 163240 + 742 = 163982
Step 222: 163982 + 742 = 164724
Step 223: 164724 + 742 = 165466
Step 224: 165466 + 742 = 166208
Step 225: 166208 + 742 = 166950
Step 226: 166950 + 742 = 167692
Step 227: 167692 + 742 = 168434
Step 228: 168434 + 742 = 169176
Step 229: 169176 + 742 = 169918
Step 230: 169918 + 742 = 170660
Step 231: 170660 + 742 = 171402
Step 232: 171402 + 742 = 172144
Step 233: 172144 + 742 = 172886
Step 234: 172886 + 742 = 173628
Step 235: 173628 + 742 = 174370
Step 236: 174370 + 742 = 175112
Step 237: 175112 + 742 = 175854
Step 238: 175854 + 742 = 176596
Step 239: 176596 + 742 = 177338
Step 240: 177338 + 742 = 178080
Step 241: 178080 + 742 = 178822
Step 242: 178822 + 742 = 179564
Step 243: 179564 + 742 = 180306
Step 244: 180306 + 742 = 181048
Step 245: 181048 + 742 = 181790
Step 246: 181790 + 742 = 182532
Step 247: 182532 + 742 = 183274
Step 248: 183274 + 742 = 184016
Step 249: 184016 + 742 = 184758
Step 250: 184758 + 742 = 185500
Step 251: 185500 + 742 = 186242
Step 252: 186242 + 742 = 186984
Step 253: 186984 + 742 = 187726
Step 254: 187726 + 742 = 188468
Step 255: 188468 + 742 = 189210
Step 256: 189210 + 742 = 189952
Step 257: 189952 + 742 = 190694
Step 258: 190694 + 742 = 191436
Step 259: 191436 + 742 = 192178
Step 260: 192178 + 742 = 192920
Step 261: 192920 + 742 = 193662
Step 262: 193662 + 742 = 194404
Step 263: 194404 + 742 = 195146
Step 264: 195146 + 742 = 195888
Step 265: 195888 + 742 = 196630
Step 266: 196630 + 742 = 197372
Step 267: 197372 + 742 = 198114
Step 268: 198114 + 742 = 198856
Step 269: 198856 + 742 = 199598
Step 270: 199598 + 742 = 200340
Step 271: 200340 + 742 = 201082
Step 272: 201082 + 742 = 201824
Step 273: 201824 + 742 = 202566
Step 274: 202566 + 742 = 203308
Step 275: 203308 + 742 = 204050
Step 276: 204050 + 742 = 204792
Step 277: 204792 + 742 = 205534
Step 278: 205534 + 742 = 206276
Step 279: 206276 + 742 = 207018
Step 280: 207018 + 742 = 207760
Step 281: 207760 + 742 = 208502
Step 282: 208502 + 742 = 209244
Step 283: 209244 + 742 = 209986
Step 284: 209986 + 742 = 210728
Step 285: 210728 + 742 = 211470
Step 286: 211470 + 742 = 212212
Step 287: 212212 + 742 = 212954
Step 288: 212954 + 742 = 213696
Step 289: 213696 + 742 = 214438
Step 290: 214438 + 742 = 215180
Step 291: 215180 + 742 = 215922
Step 292: 215922 + 742 = 216664
Step 293: 216664 + 742 = 217406
Step 294: 217406 + 742 = 218148
Step 295: 218148 + 742 = 218890
Step 296: 218890 + 742 = 219632
Step 297: 219632 + 742 = 220374
Step 298: 220374 + 742 = 221116
Step 299: 221116 + 742 = 221858
Step 300: 221858 + 742 = 222600
Step 301: 222600 + 742 = 223342
Step 302: 223342 + 742 = 224084
Step 303: 224084 + 742 = 224826
Step 304: 224826 + 742 = 225568
Step 305: 225568 + 742 = 226310
Step 306: 226310 + 742 = 227052
Step 307: 227052 + 742 = 227794
Step 308: 227794 + 742 = 228536
Step 309: 228536 + 742 = 229278
Step 310: 229278 + 742 = 230020
Step 311: 230020 + 742 = 230762
Step 312: 230762 + 742 = 231504
Step 313: 231504 + 742 = 232246
Step 314: 232246 + 742 = 232988
Step 315: 232988 + 742 = 233730
Step 316: 233730 + 742 = 234472
Step 317: 234472 + 742 = 235214
Step 318: 235214 + 742 = 235956
Step 319: 235956 + 742 = 236698
Step 320: 236698 + 742 = 237440
Step 321: 237440 + 742 = 238182
Step 322: 238182 + 742 = 238924
Step 323: 238924 + 742 = 239666
Step 324: 239666 + 742 = 240408
Step 325: 240408 + 742 = 241150
Step 326: 241150 + 742 = 241892
Step 327: 241892 + 742 = 242634
Step 328: 242634 + 742 = 243376
Step 329: 243376 + 742 = 244118
Step 330: 244118 + 742 = 244860
Step 331: 244860 + 742 = 245602
Step 332: 245602 + 742 = 246344
Step 333: 246344 + 742 = 247086
Step 334: 247086 + 742 = 247828
Step 335: 247828 + 742 = 248570
Step 336: 248570 + 742 = 249312
Step 337: 249312 + 742 = 250054
Step 338: 250054 + 742 = 250796
Step 339: 250796 + 742 = 251538
Step 340: 251538 + 742 = 252280
Step 341: 252280 + 742 = 253022
Step 342: 253022 + 742 = 253764
Step 343: 253764 + 742 = 254506
Step 344: 254506 + 742 = 255248
Step 345: 255248 + 742 = 255990
Step 346: 255990 + 742 = 256732
Step 347: 256732 + 742 = 257474
Step 348: 257474 + 742 = 258216
Step 349: 258216 + 742 = 258958
Step 350: 258958 + 742 = 259700
Step 351: 259700 + 742 = 260442
Step 352: 260442 + 742 = 261184
Step 353: 261184 + 742 = 261926
Step 354: 261926 + 742 = 262668
Step 355: 262668 + 742 = 263410
Step 356: 263410 + 742 = 264152
Step 357: 264152 + 742 = 264894
Step 358: 264894 + 742 = 265636
Step 359: 265636 + 742 = 266378
Step 360: 266378 + 742 = 267120
Step 361: 267120 + 742 = 267862
Step 362: 267862 + 742 = 268604
Step 363: 268604 + 742 = 269346
Step 364: 269346 + 742 = 270088
Step 365: 270088 + 742 = 270830
Step 366: 270830 + 742 = 271572
Step 367: 271572 + 742 = 272314
Step 368: 272314 + 742 = 273056
Step 369: 273056 + 742 = 273798
Step 370: 273798 + 742 = 274540
Step 371: 274540 + 742 = 275282
Step 372: 275282 + 742 = 276024
Step 373: 276024 + 742 = 276766
Step 374: 276766 + 742 = 277508
Step 375: 277508 + 742 = 278250
Step 376: 278250 + 742 = 278992
Step 377: 278992 + 742 = 279734
Step 378: 279734 + 742 = 280476
Step 379: 280476 + 742 = 281218
Step 380: 281218 + 742 = 281960
Step 381: 281960 + 742 = 282702
Step 382: 282702 + 742 = 283444
Step 383: 283444 + 742 = 284186
Step 384: 284186 + 742 = 284928
Step 385: 284928 + 742 = 285670
Step 386: 285670 + 742 = 286412
Step 387: 286412 + 742 = 287154
Step 388: 287154 + 742 = 287896
Step 389: 287896 + 742 = 288638
Step 390: 288638 + 742 = 289380
Step 391: 289380 + 742 = 290122
Step 392: 290122 + 742 = 290864
Step 393: 290864 + 742 = 291606
Step 394: 291606 + 742 = 292348
Step 395: 292348 + 742 = 293090
Step 396: 293090 + 742 = 293832
Step 397: 293832 + 742 = 294574
Step 398: 294574 + 742 = 295316
Step 399: 295316 + 742 = 296058
Step 400: 296058 + 742 = 296800
Step 401: 296800 + 742 = 297542
Step 402: 297542 + 742 = 298284
Step 403: 298284 + 742 = 299026
Step 404: 299026 + 742 = 299768
Step 405: 299768 + 742 = 300510
Step 406: 300510 + 742 = 301252
Step 407: 301252 + 742 = 301994
Step 408: 301994 + 742 = 302736
Step 409: 302736 + 742 = 303478
Step 410: 303478 + 742 = 304220
Step 411: 304220 + 742 = 304962
Step 412: 304962 + 742 = 305704
Step 413: 305704 + 742 = 306446
Step 414: 306446 + 742 = 307188
Step 415: 307188 + 742 = 307930
Step 416: 307930 + 742 = 308672
Step 417: 308672 + 742 = 309414
Step 418: 309414 + 742 = 310156
Step 419: 310156 + 742 = 310898

So, 742*419 = 310898