OK, let's work through this together. We're starting with 599 and we're going to multiply it by 75, which means we add 599 to itself 75 times.
Step 1: 0 + 599 = 599
Step 2: 599 + 599 = 1198
Step 3: 1198 + 599 = 1797
Step 4: 1797 + 599 = 2396
Step 5: 2396 + 599 = 2995
Step 6: 2995 + 599 = 3594
Step 7: 3594 + 599 = 4193
Step 8: 4193 + 599 = 4792
Step 9: 4792 + 599 = 5391
Step 10: 5391 + 599 = 5990
Step 11: 5990 + 599 = 6589
Step 12: 6589 + 599 = 7188
Step 13: 7188 + 599 = 7787
Step 14: 7787 + 599 = 8386
Step 15: 8386 + 599 = 8985
Step 16: 8985 + 599 = 9584
Step 17: 9584 + 599 = 10183
Step 18: 10183 + 599 = 10782
Step 19: 10782 + 599 = 11381
Step 20: 11381 + 599 = 11980
Step 21: 11980 + 599 = 12579
Step 22: 12579 + 599 = 13178
Step 23: 13178 + 599 = 13777
Step 24: 13777 + 599 = 14376
Step 25: 14376 + 599 = 14975
Step 26: 14975 + 599 = 15574
Step 27: 15574 + 599 = 16173
Step 28: 16173 + 599 = 16772
Step 29: 16772 + 599 = 17371
Step 30: 17371 + 599 = 17970
Step 31: 17970 + 599 = 18569
Step 32: 18569 + 599 = 19168
Step 33: 19168 + 599 = 19767
Step 34: 19767 + 599 = 20366
Step 35: 20366 + 599 = 20965
Step 36: 20965 + 599 = 21564
Step 37: 21564 + 599 = 22163
Step 38: 22163 + 599 = 22762
Step 39: 22762 + 599 = 23361
Step 40: 23361 + 599 = 23960
Step 41: 23960 + 599 = 24559
Step 42: 24559 + 599 = 25158
Step 43: 25158 + 599 = 25757
Step 44: 25757 + 599 = 26356
Step 45: 26356 + 599 = 26955
Step 46: 26955 + 599 = 27554
Step 47: 27554 + 599 = 28153
Step 48: 28153 + 599 = 28752
Step 49: 28752 + 599 = 29351
Step 50: 29351 + 599 = 29950
Step 51: 29950 + 599 = 30549
Step 52: 30549 + 599 = 31148
Step 53: 31148 + 599 = 31747
Step 54: 31747 + 599 = 32346
Step 55: 32346 + 599 = 32945
Step 56: 32945 + 599 = 33544
Step 57: 33544 + 599 = 34143
Step 58: 34143 + 599 = 34742
Step 59: 34742 + 599 = 35341
Step 60: 35341 + 599 = 35940
Step 61: 35940 + 599 = 36539
Step 62: 36539 + 599 = 37138
Step 63: 37138 + 599 = 37737
Step 64: 37737 + 599 = 38336
Step 65: 38336 + 599 = 38935
Step 66: 38935 + 599 = 39534
Step 67: 39534 + 599 = 40133
Step 68: 40133 + 599 = 40732
Step 69: 40732 + 599 = 41331
Step 70: 41331 + 599 = 41930
Step 71: 41930 + 599 = 42529
Step 72: 42529 + 599 = 43128
Step 73: 43128 + 599 = 43727
Step 74: 43727 + 599 = 44326
Step 75: 44326 + 599 = 44925

So, 599*75 = 44925