Sure thing! We've got 126 and we're gonna multiply it by 419. That's the same as adding 126 to itself 419 times.
Step 1: 0 + 126 = 126
Step 2: 126 + 126 = 252
Step 3: 252 + 126 = 378
Step 4: 378 + 126 = 504
Step 5: 504 + 126 = 630
Step 6: 630 + 126 = 756
Step 7: 756 + 126 = 882
Step 8: 882 + 126 = 1008
Step 9: 1008 + 126 = 1134
Step 10: 1134 + 126 = 1260
Step 11: 1260 + 126 = 1386
Step 12: 1386 + 126 = 1512
Step 13: 1512 + 126 = 1638
Step 14: 1638 + 126 = 1764
Step 15: 1764 + 126 = 1890
Step 16: 1890 + 126 = 2016
Step 17: 2016 + 126 = 2142
Step 18: 2142 + 126 = 2268
Step 19: 2268 + 126 = 2394
Step 20: 2394 + 126 = 2520
Step 21: 2520 + 126 = 2646
Step 22: 2646 + 126 = 2772
Step 23: 2772 + 126 = 2898
Step 24: 2898 + 126 = 3024
Step 25: 3024 + 126 = 3150
Step 26: 3150 + 126 = 3276
Step 27: 3276 + 126 = 3402
Step 28: 3402 + 126 = 3528
Step 29: 3528 + 126 = 3654
Step 30: 3654 + 126 = 3780
Step 31: 3780 + 126 = 3906
Step 32: 3906 + 126 = 4032
Step 33: 4032 + 126 = 4158
Step 34: 4158 + 126 = 4284
Step 35: 4284 + 126 = 4410
Step 36: 4410 + 126 = 4536
Step 37: 4536 + 126 = 4662
Step 38: 4662 + 126 = 4788
Step 39: 4788 + 126 = 4914
Step 40: 4914 + 126 = 5040
Step 41: 5040 + 126 = 5166
Step 42: 5166 + 126 = 5292
Step 43: 5292 + 126 = 5418
Step 44: 5418 + 126 = 5544
Step 45: 5544 + 126 = 5670
Step 46: 5670 + 126 = 5796
Step 47: 5796 + 126 = 5922
Step 48: 5922 + 126 = 6048
Step 49: 6048 + 126 = 6174
Step 50: 6174 + 126 = 6300
Step 51: 6300 + 126 = 6426
Step 52: 6426 + 126 = 6552
Step 53: 6552 + 126 = 6678
Step 54: 6678 + 126 = 6804
Step 55: 6804 + 126 = 6930
Step 56: 6930 + 126 = 7056
Step 57: 7056 + 126 = 7182
Step 58: 7182 + 126 = 7308
Step 59: 7308 + 126 = 7434
Step 60: 7434 + 126 = 7560
Step 61: 7560 + 126 = 7686
Step 62: 7686 + 126 = 7812
Step 63: 7812 + 126 = 7938
Step 64: 7938 + 126 = 8064
Step 65: 8064 + 126 = 8190
Step 66: 8190 + 126 = 8316
Step 67: 8316 + 126 = 8442
Step 68: 8442 + 126 = 8568
Step 69: 8568 + 126 = 8694
Step 70: 8694 + 126 = 8820
Step 71: 8820 + 126 = 8946
Step 72: 8946 + 126 = 9072
Step 73: 9072 + 126 = 9198
Step 74: 9198 + 126 = 9324
Step 75: 9324 + 126 = 9450
Step 76: 9450 + 126 = 9576
Step 77: 9576 + 126 = 9702
Step 78: 9702 + 126 = 9828
Step 79: 9828 + 126 = 9954
Step 80: 9954 + 126 = 10080
Step 81: 10080 + 126 = 10206
Step 82: 10206 + 126 = 10332
Step 83: 10332 + 126 = 10458
Step 84: 10458 + 126 = 10584
Step 85: 10584 + 126 = 10710
Step 86: 10710 + 126 = 10836
Step 87: 10836 + 126 = 10962
Step 88: 10962 + 126 = 11088
Step 89: 11088 + 126 = 11214
Step 90: 11214 + 126 = 11340
Step 91: 11340 + 126 = 11466
Step 92: 11466 + 126 = 11592
Step 93: 11592 + 126 = 11718
Step 94: 11718 + 126 = 11844
Step 95: 11844 + 126 = 11970
Step 96: 11970 + 126 = 12096
Step 97: 12096 + 126 = 12222
Step 98: 12222 + 126 = 12348
Step 99: 12348 + 126 = 12474
Step 100: 12474 + 126 = 12600
Step 101: 12600 + 126 = 12726
Step 102: 12726 + 126 = 12852
Step 103: 12852 + 126 = 12978
Step 104: 12978 + 126 = 13104
Step 105: 13104 + 126 = 13230
Step 106: 13230 + 126 = 13356
Step 107: 13356 + 126 = 13482
Step 108: 13482 + 126 = 13608
Step 109: 13608 + 126 = 13734
Step 110: 13734 + 126 = 13860
Step 111: 13860 + 126 = 13986
Step 112: 13986 + 126 = 14112
Step 113: 14112 + 126 = 14238
Step 114: 14238 + 126 = 14364
Step 115: 14364 + 126 = 14490
Step 116: 14490 + 126 = 14616
Step 117: 14616 + 126 = 14742
Step 118: 14742 + 126 = 14868
Step 119: 14868 + 126 = 14994
Step 120: 14994 + 126 = 15120
Step 121: 15120 + 126 = 15246
Step 122: 15246 + 126 = 15372
Step 123: 15372 + 126 = 15498
Step 124: 15498 + 126 = 15624
Step 125: 15624 + 126 = 15750
Step 126: 15750 + 126 = 15876
Step 127: 15876 + 126 = 16002
Step 128: 16002 + 126 = 16128
Step 129: 16128 + 126 = 16254
Step 130: 16254 + 126 = 16380
Step 131: 16380 + 126 = 16506
Step 132: 16506 + 126 = 16632
Step 133: 16632 + 126 = 16758
Step 134: 16758 + 126 = 16884
Step 135: 16884 + 126 = 17010
Step 136: 17010 + 126 = 17136
Step 137: 17136 + 126 = 17262
Step 138: 17262 + 126 = 17388
Step 139: 17388 + 126 = 17514
Step 140: 17514 + 126 = 17640
Step 141: 17640 + 126 = 17766
Step 142: 17766 + 126 = 17892
Step 143: 17892 + 126 = 18018
Step 144: 18018 + 126 = 18144
Step 145: 18144 + 126 = 18270
Step 146: 18270 + 126 = 18396
Step 147: 18396 + 126 = 18522
Step 148: 18522 + 126 = 18648
Step 149: 18648 + 126 = 18774
Step 150: 18774 + 126 = 18900
Step 151: 18900 + 126 = 19026
Step 152: 19026 + 126 = 19152
Step 153: 19152 + 126 = 19278
Step 154: 19278 + 126 = 19404
Step 155: 19404 + 126 = 19530
Step 156: 19530 + 126 = 19656
Step 157: 19656 + 126 = 19782
Step 158: 19782 + 126 = 19908
Step 159: 19908 + 126 = 20034
Step 160: 20034 + 126 = 20160
Step 161: 20160 + 126 = 20286
Step 162: 20286 + 126 = 20412
Step 163: 20412 + 126 = 20538
Step 164: 20538 + 126 = 20664
Step 165: 20664 + 126 = 20790
Step 166: 20790 + 126 = 20916
Step 167: 20916 + 126 = 21042
Step 168: 21042 + 126 = 21168
Step 169: 21168 + 126 = 21294
Step 170: 21294 + 126 = 21420
Step 171: 21420 + 126 = 21546
Step 172: 21546 + 126 = 21672
Step 173: 21672 + 126 = 21798
Step 174: 21798 + 126 = 21924
Step 175: 21924 + 126 = 22050
Step 176: 22050 + 126 = 22176
Step 177: 22176 + 126 = 22302
Step 178: 22302 + 126 = 22428
Step 179: 22428 + 126 = 22554
Step 180: 22554 + 126 = 22680
Step 181: 22680 + 126 = 22806
Step 182: 22806 + 126 = 22932
Step 183: 22932 + 126 = 23058
Step 184: 23058 + 126 = 23184
Step 185: 23184 + 126 = 23310
Step 186: 23310 + 126 = 23436
Step 187: 23436 + 126 = 23562
Step 188: 23562 + 126 = 23688
Step 189: 23688 + 126 = 23814
Step 190: 23814 + 126 = 23940
Step 191: 23940 + 126 = 24066
Step 192: 24066 + 126 = 24192
Step 193: 24192 + 126 = 24318
Step 194: 24318 + 126 = 24444
Step 195: 24444 + 126 = 24570
Step 196: 24570 + 126 = 24696
Step 197: 24696 + 126 = 24822
Step 198: 24822 + 126 = 24948
Step 199: 24948 + 126 = 25074
Step 200: 25074 + 126 = 25200
Step 201: 25200 + 126 = 25326
Step 202: 25326 + 126 = 25452
Step 203: 25452 + 126 = 25578
Step 204: 25578 + 126 = 25704
Step 205: 25704 + 126 = 25830
Step 206: 25830 + 126 = 25956
Step 207: 25956 + 126 = 26082
Step 208: 26082 + 126 = 26208
Step 209: 26208 + 126 = 26334
Step 210: 26334 + 126 = 26460
Step 211: 26460 + 126 = 26586
Step 212: 26586 + 126 = 26712
Step 213: 26712 + 126 = 26838
Step 214: 26838 + 126 = 26964
Step 215: 26964 + 126 = 27090
Step 216: 27090 + 126 = 27216
Step 217: 27216 + 126 = 27342
Step 218: 27342 + 126 = 27468
Step 219: 27468 + 126 = 27594
Step 220: 27594 + 126 = 27720
Step 221: 27720 + 126 = 27846
Step 222: 27846 + 126 = 27972
Step 223: 27972 + 126 = 28098
Step 224: 28098 + 126 = 28224
Step 225: 28224 + 126 = 28350
Step 226: 28350 + 126 = 28476
Step 227: 28476 + 126 = 28602
Step 228: 28602 + 126 = 28728
Step 229: 28728 + 126 = 28854
Step 230: 28854 + 126 = 28980
Step 231: 28980 + 126 = 29106
Step 232: 29106 + 126 = 29232
Step 233: 29232 + 126 = 29358
Step 234: 29358 + 126 = 29484
Step 235: 29484 + 126 = 29610
Step 236: 29610 + 126 = 29736
Step 237: 29736 + 126 = 29862
Step 238: 29862 + 126 = 29988
Step 239: 29988 + 126 = 30114
Step 240: 30114 + 126 = 30240
Step 241: 30240 + 126 = 30366
Step 242: 30366 + 126 = 30492
Step 243: 30492 + 126 = 30618
Step 244: 30618 + 126 = 30744
Step 245: 30744 + 126 = 30870
Step 246: 30870 + 126 = 30996
Step 247: 30996 + 126 = 31122
Step 248: 31122 + 126 = 31248
Step 249: 31248 + 126 = 31374
Step 250: 31374 + 126 = 31500
Step 251: 31500 + 126 = 31626
Step 252: 31626 + 126 = 31752
Step 253: 31752 + 126 = 31878
Step 254: 31878 + 126 = 32004
Step 255: 32004 + 126 = 32130
Step 256: 32130 + 126 = 32256
Step 257: 32256 + 126 = 32382
Step 258: 32382 + 126 = 32508
Step 259: 32508 + 126 = 32634
Step 260: 32634 + 126 = 32760
Step 261: 32760 + 126 = 32886
Step 262: 32886 + 126 = 33012
Step 263: 33012 + 126 = 33138
Step 264: 33138 + 126 = 33264
Step 265: 33264 + 126 = 33390
Step 266: 33390 + 126 = 33516
Step 267: 33516 + 126 = 33642
Step 268: 33642 + 126 = 33768
Step 269: 33768 + 126 = 33894
Step 270: 33894 + 126 = 34020
Step 271: 34020 + 126 = 34146
Step 272: 34146 + 126 = 34272
Step 273: 34272 + 126 = 34398
Step 274: 34398 + 126 = 34524
Step 275: 34524 + 126 = 34650
Step 276: 34650 + 126 = 34776
Step 277: 34776 + 126 = 34902
Step 278: 34902 + 126 = 35028
Step 279: 35028 + 126 = 35154
Step 280: 35154 + 126 = 35280
Step 281: 35280 + 126 = 35406
Step 282: 35406 + 126 = 35532
Step 283: 35532 + 126 = 35658
Step 284: 35658 + 126 = 35784
Step 285: 35784 + 126 = 35910
Step 286: 35910 + 126 = 36036
Step 287: 36036 + 126 = 36162
Step 288: 36162 + 126 = 36288
Step 289: 36288 + 126 = 36414
Step 290: 36414 + 126 = 36540
Step 291: 36540 + 126 = 36666
Step 292: 36666 + 126 = 36792
Step 293: 36792 + 126 = 36918
Step 294: 36918 + 126 = 37044
Step 295: 37044 + 126 = 37170
Step 296: 37170 + 126 = 37296
Step 297: 37296 + 126 = 37422
Step 298: 37422 + 126 = 37548
Step 299: 37548 + 126 = 37674
Step 300: 37674 + 126 = 37800
Step 301: 37800 + 126 = 37926
Step 302: 37926 + 126 = 38052
Step 303: 38052 + 126 = 38178
Step 304: 38178 + 126 = 38304
Step 305: 38304 + 126 = 38430
Step 306: 38430 + 126 = 38556
Step 307: 38556 + 126 = 38682
Step 308: 38682 + 126 = 38808
Step 309: 38808 + 126 = 38934
Step 310: 38934 + 126 = 39060
Step 311: 39060 + 126 = 39186
Step 312: 39186 + 126 = 39312
Step 313: 39312 + 126 = 39438
Step 314: 39438 + 126 = 39564
Step 315: 39564 + 126 = 39690
Step 316: 39690 + 126 = 39816
Step 317: 39816 + 126 = 39942
Step 318: 39942 + 126 = 40068
Step 319: 40068 + 126 = 40194
Step 320: 40194 + 126 = 40320
Step 321: 40320 + 126 = 40446
Step 322: 40446 + 126 = 40572
Step 323: 40572 + 126 = 40698
Step 324: 40698 + 126 = 40824
Step 325: 40824 + 126 = 40950
Step 326: 40950 + 126 = 41076
Step 327: 41076 + 126 = 41202
Step 328: 41202 + 126 = 41328
Step 329: 41328 + 126 = 41454
Step 330: 41454 + 126 = 41580
Step 331: 41580 + 126 = 41706
Step 332: 41706 + 126 = 41832
Step 333: 41832 + 126 = 41958
Step 334: 41958 + 126 = 42084
Step 335: 42084 + 126 = 42210
Step 336: 42210 + 126 = 42336
Step 337: 42336 + 126 = 42462
Step 338: 42462 + 126 = 42588
Step 339: 42588 + 126 = 42714
Step 340: 42714 + 126 = 42840
Step 341: 42840 + 126 = 42966
Step 342: 42966 + 126 = 43092
Step 343: 43092 + 126 = 43218
Step 344: 43218 + 126 = 43344
Step 345: 43344 + 126 = 43470
Step 346: 43470 + 126 = 43596
Step 347: 43596 + 126 = 43722
Step 348: 43722 + 126 = 43848
Step 349: 43848 + 126 = 43974
Step 350: 43974 + 126 = 44100
Step 351: 44100 + 126 = 44226
Step 352: 44226 + 126 = 44352
Step 353: 44352 + 126 = 44478
Step 354: 44478 + 126 = 44604
Step 355: 44604 + 126 = 44730
Step 356: 44730 + 126 = 44856
Step 357: 44856 + 126 = 44982
Step 358: 44982 + 126 = 45108
Step 359: 45108 + 126 = 45234
Step 360: 45234 + 126 = 45360
Step 361: 45360 + 126 = 45486
Step 362: 45486 + 126 = 45612
Step 363: 45612 + 126 = 45738
Step 364: 45738 + 126 = 45864
Step 365: 45864 + 126 = 45990
Step 366: 45990 + 126 = 46116
Step 367: 46116 + 126 = 46242
Step 368: 46242 + 126 = 46368
Step 369: 46368 + 126 = 46494
Step 370: 46494 + 126 = 46620
Step 371: 46620 + 126 = 46746
Step 372: 46746 + 126 = 46872
Step 373: 46872 + 126 = 46998
Step 374: 46998 + 126 = 47124
Step 375: 47124 + 126 = 47250
Step 376: 47250 + 126 = 47376
Step 377: 47376 + 126 = 47502
Step 378: 47502 + 126 = 47628
Step 379: 47628 + 126 = 47754
Step 380: 47754 + 126 = 47880
Step 381: 47880 + 126 = 48006
Step 382: 48006 + 126 = 48132
Step 383: 48132 + 126 = 48258
Step 384: 48258 + 126 = 48384
Step 385: 48384 + 126 = 48510
Step 386: 48510 + 126 = 48636
Step 387: 48636 + 126 = 48762
Step 388: 48762 + 126 = 48888
Step 389: 48888 + 126 = 49014
Step 390: 49014 + 126 = 49140
Step 391: 49140 + 126 = 49266
Step 392: 49266 + 126 = 49392
Step 393: 49392 + 126 = 49518
Step 394: 49518 + 126 = 49644
Step 395: 49644 + 126 = 49770
Step 396: 49770 + 126 = 49896
Step 397: 49896 + 126 = 50022
Step 398: 50022 + 126 = 50148
Step 399: 50148 + 126 = 50274
Step 400: 50274 + 126 = 50400
Step 401: 50400 + 126 = 50526
Step 402: 50526 + 126 = 50652
Step 403: 50652 + 126 = 50778
Step 404: 50778 + 126 = 50904
Step 405: 50904 + 126 = 51030
Step 406: 51030 + 126 = 51156
Step 407: 51156 + 126 = 51282
Step 408: 51282 + 126 = 51408
Step 409: 51408 + 126 = 51534
Step 410: 51534 + 126 = 51660
Step 411: 51660 + 126 = 51786
Step 412: 51786 + 126 = 51912
Step 413: 51912 + 126 = 52038
Step 414: 52038 + 126 = 52164
Step 415: 52164 + 126 = 52290
Step 416: 52290 + 126 = 52416
Step 417: 52416 + 126 = 52542
Step 418: 52542 + 126 = 52668
Step 419: 52668 + 126 = 52794

So, 126*419 = 52794