OK, let's crack this. We're given 759 and our task is to multiply it by 120. Essentially, we'll be adding 759 to itself 120 times.
Step 1: 0 + 759 = 759
Step 2: 759 + 759 = 1518
Step 3: 1518 + 759 = 2277
Step 4: 2277 + 759 = 3036
Step 5: 3036 + 759 = 3795
Step 6: 3795 + 759 = 4554
Step 7: 4554 + 759 = 5313
Step 8: 5313 + 759 = 6072
Step 9: 6072 + 759 = 6831
Step 10: 6831 + 759 = 7590
Step 11: 7590 + 759 = 8349
Step 12: 8349 + 759 = 9108
Step 13: 9108 + 759 = 9867
Step 14: 9867 + 759 = 10626
Step 15: 10626 + 759 = 11385
Step 16: 11385 + 759 = 12144
Step 17: 12144 + 759 = 12903
Step 18: 12903 + 759 = 13662
Step 19: 13662 + 759 = 14421
Step 20: 14421 + 759 = 15180
Step 21: 15180 + 759 = 15939
Step 22: 15939 + 759 = 16698
Step 23: 16698 + 759 = 17457
Step 24: 17457 + 759 = 18216
Step 25: 18216 + 759 = 18975
Step 26: 18975 + 759 = 19734
Step 27: 19734 + 759 = 20493
Step 28: 20493 + 759 = 21252
Step 29: 21252 + 759 = 22011
Step 30: 22011 + 759 = 22770
Step 31: 22770 + 759 = 23529
Step 32: 23529 + 759 = 24288
Step 33: 24288 + 759 = 25047
Step 34: 25047 + 759 = 25806
Step 35: 25806 + 759 = 26565
Step 36: 26565 + 759 = 27324
Step 37: 27324 + 759 = 28083
Step 38: 28083 + 759 = 28842
Step 39: 28842 + 759 = 29601
Step 40: 29601 + 759 = 30360
Step 41: 30360 + 759 = 31119
Step 42: 31119 + 759 = 31878
Step 43: 31878 + 759 = 32637
Step 44: 32637 + 759 = 33396
Step 45: 33396 + 759 = 34155
Step 46: 34155 + 759 = 34914
Step 47: 34914 + 759 = 35673
Step 48: 35673 + 759 = 36432
Step 49: 36432 + 759 = 37191
Step 50: 37191 + 759 = 37950
Step 51: 37950 + 759 = 38709
Step 52: 38709 + 759 = 39468
Step 53: 39468 + 759 = 40227
Step 54: 40227 + 759 = 40986
Step 55: 40986 + 759 = 41745
Step 56: 41745 + 759 = 42504
Step 57: 42504 + 759 = 43263
Step 58: 43263 + 759 = 44022
Step 59: 44022 + 759 = 44781
Step 60: 44781 + 759 = 45540
Step 61: 45540 + 759 = 46299
Step 62: 46299 + 759 = 47058
Step 63: 47058 + 759 = 47817
Step 64: 47817 + 759 = 48576
Step 65: 48576 + 759 = 49335
Step 66: 49335 + 759 = 50094
Step 67: 50094 + 759 = 50853
Step 68: 50853 + 759 = 51612
Step 69: 51612 + 759 = 52371
Step 70: 52371 + 759 = 53130
Step 71: 53130 + 759 = 53889
Step 72: 53889 + 759 = 54648
Step 73: 54648 + 759 = 55407
Step 74: 55407 + 759 = 56166
Step 75: 56166 + 759 = 56925
Step 76: 56925 + 759 = 57684
Step 77: 57684 + 759 = 58443
Step 78: 58443 + 759 = 59202
Step 79: 59202 + 759 = 59961
Step 80: 59961 + 759 = 60720
Step 81: 60720 + 759 = 61479
Step 82: 61479 + 759 = 62238
Step 83: 62238 + 759 = 62997
Step 84: 62997 + 759 = 63756
Step 85: 63756 + 759 = 64515
Step 86: 64515 + 759 = 65274
Step 87: 65274 + 759 = 66033
Step 88: 66033 + 759 = 66792
Step 89: 66792 + 759 = 67551
Step 90: 67551 + 759 = 68310
Step 91: 68310 + 759 = 69069
Step 92: 69069 + 759 = 69828
Step 93: 69828 + 759 = 70587
Step 94: 70587 + 759 = 71346
Step 95: 71346 + 759 = 72105
Step 96: 72105 + 759 = 72864
Step 97: 72864 + 759 = 73623
Step 98: 73623 + 759 = 74382
Step 99: 74382 + 759 = 75141
Step 100: 75141 + 759 = 75900
Step 101: 75900 + 759 = 76659
Step 102: 76659 + 759 = 77418
Step 103: 77418 + 759 = 78177
Step 104: 78177 + 759 = 78936
Step 105: 78936 + 759 = 79695
Step 106: 79695 + 759 = 80454
Step 107: 80454 + 759 = 81213
Step 108: 81213 + 759 = 81972
Step 109: 81972 + 759 = 82731
Step 110: 82731 + 759 = 83490
Step 111: 83490 + 759 = 84249
Step 112: 84249 + 759 = 85008
Step 113: 85008 + 759 = 85767
Step 114: 85767 + 759 = 86526
Step 115: 86526 + 759 = 87285
Step 116: 87285 + 759 = 88044
Step 117: 88044 + 759 = 88803
Step 118: 88803 + 759 = 89562
Step 119: 89562 + 759 = 90321
Step 120: 90321 + 759 = 91080

So, 759*120 = 91080