Alright, let's solve this math problem step by step. First, we have the number 253. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 126. So, we're going to take the number 253 and add it to itself 126 times.
Step 1: 0 + 253 = 253
Step 2: 253 + 253 = 506
Step 3: 506 + 253 = 759
Step 4: 759 + 253 = 1012
Step 5: 1012 + 253 = 1265
Step 6: 1265 + 253 = 1518
Step 7: 1518 + 253 = 1771
Step 8: 1771 + 253 = 2024
Step 9: 2024 + 253 = 2277
Step 10: 2277 + 253 = 2530
Step 11: 2530 + 253 = 2783
Step 12: 2783 + 253 = 3036
Step 13: 3036 + 253 = 3289
Step 14: 3289 + 253 = 3542
Step 15: 3542 + 253 = 3795
Step 16: 3795 + 253 = 4048
Step 17: 4048 + 253 = 4301
Step 18: 4301 + 253 = 4554
Step 19: 4554 + 253 = 4807
Step 20: 4807 + 253 = 5060
Step 21: 5060 + 253 = 5313
Step 22: 5313 + 253 = 5566
Step 23: 5566 + 253 = 5819
Step 24: 5819 + 253 = 6072
Step 25: 6072 + 253 = 6325
Step 26: 6325 + 253 = 6578
Step 27: 6578 + 253 = 6831
Step 28: 6831 + 253 = 7084
Step 29: 7084 + 253 = 7337
Step 30: 7337 + 253 = 7590
Step 31: 7590 + 253 = 7843
Step 32: 7843 + 253 = 8096
Step 33: 8096 + 253 = 8349
Step 34: 8349 + 253 = 8602
Step 35: 8602 + 253 = 8855
Step 36: 8855 + 253 = 9108
Step 37: 9108 + 253 = 9361
Step 38: 9361 + 253 = 9614
Step 39: 9614 + 253 = 9867
Step 40: 9867 + 253 = 10120
Step 41: 10120 + 253 = 10373
Step 42: 10373 + 253 = 10626
Step 43: 10626 + 253 = 10879
Step 44: 10879 + 253 = 11132
Step 45: 11132 + 253 = 11385
Step 46: 11385 + 253 = 11638
Step 47: 11638 + 253 = 11891
Step 48: 11891 + 253 = 12144
Step 49: 12144 + 253 = 12397
Step 50: 12397 + 253 = 12650
Step 51: 12650 + 253 = 12903
Step 52: 12903 + 253 = 13156
Step 53: 13156 + 253 = 13409
Step 54: 13409 + 253 = 13662
Step 55: 13662 + 253 = 13915
Step 56: 13915 + 253 = 14168
Step 57: 14168 + 253 = 14421
Step 58: 14421 + 253 = 14674
Step 59: 14674 + 253 = 14927
Step 60: 14927 + 253 = 15180
Step 61: 15180 + 253 = 15433
Step 62: 15433 + 253 = 15686
Step 63: 15686 + 253 = 15939
Step 64: 15939 + 253 = 16192
Step 65: 16192 + 253 = 16445
Step 66: 16445 + 253 = 16698
Step 67: 16698 + 253 = 16951
Step 68: 16951 + 253 = 17204
Step 69: 17204 + 253 = 17457
Step 70: 17457 + 253 = 17710
Step 71: 17710 + 253 = 17963
Step 72: 17963 + 253 = 18216
Step 73: 18216 + 253 = 18469
Step 74: 18469 + 253 = 18722
Step 75: 18722 + 253 = 18975
Step 76: 18975 + 253 = 19228
Step 77: 19228 + 253 = 19481
Step 78: 19481 + 253 = 19734
Step 79: 19734 + 253 = 19987
Step 80: 19987 + 253 = 20240
Step 81: 20240 + 253 = 20493
Step 82: 20493 + 253 = 20746
Step 83: 20746 + 253 = 20999
Step 84: 20999 + 253 = 21252
Step 85: 21252 + 253 = 21505
Step 86: 21505 + 253 = 21758
Step 87: 21758 + 253 = 22011
Step 88: 22011 + 253 = 22264
Step 89: 22264 + 253 = 22517
Step 90: 22517 + 253 = 22770
Step 91: 22770 + 253 = 23023
Step 92: 23023 + 253 = 23276
Step 93: 23276 + 253 = 23529
Step 94: 23529 + 253 = 23782
Step 95: 23782 + 253 = 24035
Step 96: 24035 + 253 = 24288
Step 97: 24288 + 253 = 24541
Step 98: 24541 + 253 = 24794
Step 99: 24794 + 253 = 25047
Step 100: 25047 + 253 = 25300
Step 101: 25300 + 253 = 25553
Step 102: 25553 + 253 = 25806
Step 103: 25806 + 253 = 26059
Step 104: 26059 + 253 = 26312
Step 105: 26312 + 253 = 26565
Step 106: 26565 + 253 = 26818
Step 107: 26818 + 253 = 27071
Step 108: 27071 + 253 = 27324
Step 109: 27324 + 253 = 27577
Step 110: 27577 + 253 = 27830
Step 111: 27830 + 253 = 28083
Step 112: 28083 + 253 = 28336
Step 113: 28336 + 253 = 28589
Step 114: 28589 + 253 = 28842
Step 115: 28842 + 253 = 29095
Step 116: 29095 + 253 = 29348
Step 117: 29348 + 253 = 29601
Step 118: 29601 + 253 = 29854
Step 119: 29854 + 253 = 30107
Step 120: 30107 + 253 = 30360
Step 121: 30360 + 253 = 30613
Step 122: 30613 + 253 = 30866
Step 123: 30866 + 253 = 31119
Step 124: 31119 + 253 = 31372
Step 125: 31372 + 253 = 31625
Step 126: 31625 + 253 = 31878

So, 253*126 = 31878