Sure thing, let's get straight to it. We start with 126 and we're going to multiply it by 83, which means adding 126 to itself 83 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

So, 126*83 = 10458