OK, let's work through this together. We're starting with 247 and we're going to multiply it by 128, which means we add 247 to itself 128 times.
Step 1: 0 + 247 = 247
Step 2: 247 + 247 = 494
Step 3: 494 + 247 = 741
Step 4: 741 + 247 = 988
Step 5: 988 + 247 = 1235
Step 6: 1235 + 247 = 1482
Step 7: 1482 + 247 = 1729
Step 8: 1729 + 247 = 1976
Step 9: 1976 + 247 = 2223
Step 10: 2223 + 247 = 2470
Step 11: 2470 + 247 = 2717
Step 12: 2717 + 247 = 2964
Step 13: 2964 + 247 = 3211
Step 14: 3211 + 247 = 3458
Step 15: 3458 + 247 = 3705
Step 16: 3705 + 247 = 3952
Step 17: 3952 + 247 = 4199
Step 18: 4199 + 247 = 4446
Step 19: 4446 + 247 = 4693
Step 20: 4693 + 247 = 4940
Step 21: 4940 + 247 = 5187
Step 22: 5187 + 247 = 5434
Step 23: 5434 + 247 = 5681
Step 24: 5681 + 247 = 5928
Step 25: 5928 + 247 = 6175
Step 26: 6175 + 247 = 6422
Step 27: 6422 + 247 = 6669
Step 28: 6669 + 247 = 6916
Step 29: 6916 + 247 = 7163
Step 30: 7163 + 247 = 7410
Step 31: 7410 + 247 = 7657
Step 32: 7657 + 247 = 7904
Step 33: 7904 + 247 = 8151
Step 34: 8151 + 247 = 8398
Step 35: 8398 + 247 = 8645
Step 36: 8645 + 247 = 8892
Step 37: 8892 + 247 = 9139
Step 38: 9139 + 247 = 9386
Step 39: 9386 + 247 = 9633
Step 40: 9633 + 247 = 9880
Step 41: 9880 + 247 = 10127
Step 42: 10127 + 247 = 10374
Step 43: 10374 + 247 = 10621
Step 44: 10621 + 247 = 10868
Step 45: 10868 + 247 = 11115
Step 46: 11115 + 247 = 11362
Step 47: 11362 + 247 = 11609
Step 48: 11609 + 247 = 11856
Step 49: 11856 + 247 = 12103
Step 50: 12103 + 247 = 12350
Step 51: 12350 + 247 = 12597
Step 52: 12597 + 247 = 12844
Step 53: 12844 + 247 = 13091
Step 54: 13091 + 247 = 13338
Step 55: 13338 + 247 = 13585
Step 56: 13585 + 247 = 13832
Step 57: 13832 + 247 = 14079
Step 58: 14079 + 247 = 14326
Step 59: 14326 + 247 = 14573
Step 60: 14573 + 247 = 14820
Step 61: 14820 + 247 = 15067
Step 62: 15067 + 247 = 15314
Step 63: 15314 + 247 = 15561
Step 64: 15561 + 247 = 15808
Step 65: 15808 + 247 = 16055
Step 66: 16055 + 247 = 16302
Step 67: 16302 + 247 = 16549
Step 68: 16549 + 247 = 16796
Step 69: 16796 + 247 = 17043
Step 70: 17043 + 247 = 17290
Step 71: 17290 + 247 = 17537
Step 72: 17537 + 247 = 17784
Step 73: 17784 + 247 = 18031
Step 74: 18031 + 247 = 18278
Step 75: 18278 + 247 = 18525
Step 76: 18525 + 247 = 18772
Step 77: 18772 + 247 = 19019
Step 78: 19019 + 247 = 19266
Step 79: 19266 + 247 = 19513
Step 80: 19513 + 247 = 19760
Step 81: 19760 + 247 = 20007
Step 82: 20007 + 247 = 20254
Step 83: 20254 + 247 = 20501
Step 84: 20501 + 247 = 20748
Step 85: 20748 + 247 = 20995
Step 86: 20995 + 247 = 21242
Step 87: 21242 + 247 = 21489
Step 88: 21489 + 247 = 21736
Step 89: 21736 + 247 = 21983
Step 90: 21983 + 247 = 22230
Step 91: 22230 + 247 = 22477
Step 92: 22477 + 247 = 22724
Step 93: 22724 + 247 = 22971
Step 94: 22971 + 247 = 23218
Step 95: 23218 + 247 = 23465
Step 96: 23465 + 247 = 23712
Step 97: 23712 + 247 = 23959
Step 98: 23959 + 247 = 24206
Step 99: 24206 + 247 = 24453
Step 100: 24453 + 247 = 24700
Step 101: 24700 + 247 = 24947
Step 102: 24947 + 247 = 25194
Step 103: 25194 + 247 = 25441
Step 104: 25441 + 247 = 25688
Step 105: 25688 + 247 = 25935
Step 106: 25935 + 247 = 26182
Step 107: 26182 + 247 = 26429
Step 108: 26429 + 247 = 26676
Step 109: 26676 + 247 = 26923
Step 110: 26923 + 247 = 27170
Step 111: 27170 + 247 = 27417
Step 112: 27417 + 247 = 27664
Step 113: 27664 + 247 = 27911
Step 114: 27911 + 247 = 28158
Step 115: 28158 + 247 = 28405
Step 116: 28405 + 247 = 28652
Step 117: 28652 + 247 = 28899
Step 118: 28899 + 247 = 29146
Step 119: 29146 + 247 = 29393
Step 120: 29393 + 247 = 29640
Step 121: 29640 + 247 = 29887
Step 122: 29887 + 247 = 30134
Step 123: 30134 + 247 = 30381
Step 124: 30381 + 247 = 30628
Step 125: 30628 + 247 = 30875
Step 126: 30875 + 247 = 31122
Step 127: 31122 + 247 = 31369
Step 128: 31369 + 247 = 31616

So, 247*128 = 31616