Alright, let's solve this math problem step by step. First, we have the number 838. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 129. So, we're going to take the number 838 and add it to itself 129 times.
Step 1: 0 + 838 = 838
Step 2: 838 + 838 = 1676
Step 3: 1676 + 838 = 2514
Step 4: 2514 + 838 = 3352
Step 5: 3352 + 838 = 4190
Step 6: 4190 + 838 = 5028
Step 7: 5028 + 838 = 5866
Step 8: 5866 + 838 = 6704
Step 9: 6704 + 838 = 7542
Step 10: 7542 + 838 = 8380
Step 11: 8380 + 838 = 9218
Step 12: 9218 + 838 = 10056
Step 13: 10056 + 838 = 10894
Step 14: 10894 + 838 = 11732
Step 15: 11732 + 838 = 12570
Step 16: 12570 + 838 = 13408
Step 17: 13408 + 838 = 14246
Step 18: 14246 + 838 = 15084
Step 19: 15084 + 838 = 15922
Step 20: 15922 + 838 = 16760
Step 21: 16760 + 838 = 17598
Step 22: 17598 + 838 = 18436
Step 23: 18436 + 838 = 19274
Step 24: 19274 + 838 = 20112
Step 25: 20112 + 838 = 20950
Step 26: 20950 + 838 = 21788
Step 27: 21788 + 838 = 22626
Step 28: 22626 + 838 = 23464
Step 29: 23464 + 838 = 24302
Step 30: 24302 + 838 = 25140
Step 31: 25140 + 838 = 25978
Step 32: 25978 + 838 = 26816
Step 33: 26816 + 838 = 27654
Step 34: 27654 + 838 = 28492
Step 35: 28492 + 838 = 29330
Step 36: 29330 + 838 = 30168
Step 37: 30168 + 838 = 31006
Step 38: 31006 + 838 = 31844
Step 39: 31844 + 838 = 32682
Step 40: 32682 + 838 = 33520
Step 41: 33520 + 838 = 34358
Step 42: 34358 + 838 = 35196
Step 43: 35196 + 838 = 36034
Step 44: 36034 + 838 = 36872
Step 45: 36872 + 838 = 37710
Step 46: 37710 + 838 = 38548
Step 47: 38548 + 838 = 39386
Step 48: 39386 + 838 = 40224
Step 49: 40224 + 838 = 41062
Step 50: 41062 + 838 = 41900
Step 51: 41900 + 838 = 42738
Step 52: 42738 + 838 = 43576
Step 53: 43576 + 838 = 44414
Step 54: 44414 + 838 = 45252
Step 55: 45252 + 838 = 46090
Step 56: 46090 + 838 = 46928
Step 57: 46928 + 838 = 47766
Step 58: 47766 + 838 = 48604
Step 59: 48604 + 838 = 49442
Step 60: 49442 + 838 = 50280
Step 61: 50280 + 838 = 51118
Step 62: 51118 + 838 = 51956
Step 63: 51956 + 838 = 52794
Step 64: 52794 + 838 = 53632
Step 65: 53632 + 838 = 54470
Step 66: 54470 + 838 = 55308
Step 67: 55308 + 838 = 56146
Step 68: 56146 + 838 = 56984
Step 69: 56984 + 838 = 57822
Step 70: 57822 + 838 = 58660
Step 71: 58660 + 838 = 59498
Step 72: 59498 + 838 = 60336
Step 73: 60336 + 838 = 61174
Step 74: 61174 + 838 = 62012
Step 75: 62012 + 838 = 62850
Step 76: 62850 + 838 = 63688
Step 77: 63688 + 838 = 64526
Step 78: 64526 + 838 = 65364
Step 79: 65364 + 838 = 66202
Step 80: 66202 + 838 = 67040
Step 81: 67040 + 838 = 67878
Step 82: 67878 + 838 = 68716
Step 83: 68716 + 838 = 69554
Step 84: 69554 + 838 = 70392
Step 85: 70392 + 838 = 71230
Step 86: 71230 + 838 = 72068
Step 87: 72068 + 838 = 72906
Step 88: 72906 + 838 = 73744
Step 89: 73744 + 838 = 74582
Step 90: 74582 + 838 = 75420
Step 91: 75420 + 838 = 76258
Step 92: 76258 + 838 = 77096
Step 93: 77096 + 838 = 77934
Step 94: 77934 + 838 = 78772
Step 95: 78772 + 838 = 79610
Step 96: 79610 + 838 = 80448
Step 97: 80448 + 838 = 81286
Step 98: 81286 + 838 = 82124
Step 99: 82124 + 838 = 82962
Step 100: 82962 + 838 = 83800
Step 101: 83800 + 838 = 84638
Step 102: 84638 + 838 = 85476
Step 103: 85476 + 838 = 86314
Step 104: 86314 + 838 = 87152
Step 105: 87152 + 838 = 87990
Step 106: 87990 + 838 = 88828
Step 107: 88828 + 838 = 89666
Step 108: 89666 + 838 = 90504
Step 109: 90504 + 838 = 91342
Step 110: 91342 + 838 = 92180
Step 111: 92180 + 838 = 93018
Step 112: 93018 + 838 = 93856
Step 113: 93856 + 838 = 94694
Step 114: 94694 + 838 = 95532
Step 115: 95532 + 838 = 96370
Step 116: 96370 + 838 = 97208
Step 117: 97208 + 838 = 98046
Step 118: 98046 + 838 = 98884
Step 119: 98884 + 838 = 99722
Step 120: 99722 + 838 = 100560
Step 121: 100560 + 838 = 101398
Step 122: 101398 + 838 = 102236
Step 123: 102236 + 838 = 103074
Step 124: 103074 + 838 = 103912
Step 125: 103912 + 838 = 104750
Step 126: 104750 + 838 = 105588
Step 127: 105588 + 838 = 106426
Step 128: 106426 + 838 = 107264
Step 129: 107264 + 838 = 108102

So, 838*129 = 108102