Let's get this math done. We have 763 and we're going to multiply it by 51. This is the same as taking 763 and adding it to itself 51 times.
Step 1: 0 + 763 = 763
Step 2: 763 + 763 = 1526
Step 3: 1526 + 763 = 2289
Step 4: 2289 + 763 = 3052
Step 5: 3052 + 763 = 3815
Step 6: 3815 + 763 = 4578
Step 7: 4578 + 763 = 5341
Step 8: 5341 + 763 = 6104
Step 9: 6104 + 763 = 6867
Step 10: 6867 + 763 = 7630
Step 11: 7630 + 763 = 8393
Step 12: 8393 + 763 = 9156
Step 13: 9156 + 763 = 9919
Step 14: 9919 + 763 = 10682
Step 15: 10682 + 763 = 11445
Step 16: 11445 + 763 = 12208
Step 17: 12208 + 763 = 12971
Step 18: 12971 + 763 = 13734
Step 19: 13734 + 763 = 14497
Step 20: 14497 + 763 = 15260
Step 21: 15260 + 763 = 16023
Step 22: 16023 + 763 = 16786
Step 23: 16786 + 763 = 17549
Step 24: 17549 + 763 = 18312
Step 25: 18312 + 763 = 19075
Step 26: 19075 + 763 = 19838
Step 27: 19838 + 763 = 20601
Step 28: 20601 + 763 = 21364
Step 29: 21364 + 763 = 22127
Step 30: 22127 + 763 = 22890
Step 31: 22890 + 763 = 23653
Step 32: 23653 + 763 = 24416
Step 33: 24416 + 763 = 25179
Step 34: 25179 + 763 = 25942
Step 35: 25942 + 763 = 26705
Step 36: 26705 + 763 = 27468
Step 37: 27468 + 763 = 28231
Step 38: 28231 + 763 = 28994
Step 39: 28994 + 763 = 29757
Step 40: 29757 + 763 = 30520
Step 41: 30520 + 763 = 31283
Step 42: 31283 + 763 = 32046
Step 43: 32046 + 763 = 32809
Step 44: 32809 + 763 = 33572
Step 45: 33572 + 763 = 34335
Step 46: 34335 + 763 = 35098
Step 47: 35098 + 763 = 35861
Step 48: 35861 + 763 = 36624
Step 49: 36624 + 763 = 37387
Step 50: 37387 + 763 = 38150
Step 51: 38150 + 763 = 38913

So, 763*51 = 38913