Let's roll up our sleeves and solve this. We have 957 and we're going to multiply it by 72, essentially adding 957 to itself 72 times.
Step 1: 0 + 957 = 957
Step 2: 957 + 957 = 1914
Step 3: 1914 + 957 = 2871
Step 4: 2871 + 957 = 3828
Step 5: 3828 + 957 = 4785
Step 6: 4785 + 957 = 5742
Step 7: 5742 + 957 = 6699
Step 8: 6699 + 957 = 7656
Step 9: 7656 + 957 = 8613
Step 10: 8613 + 957 = 9570
Step 11: 9570 + 957 = 10527
Step 12: 10527 + 957 = 11484
Step 13: 11484 + 957 = 12441
Step 14: 12441 + 957 = 13398
Step 15: 13398 + 957 = 14355
Step 16: 14355 + 957 = 15312
Step 17: 15312 + 957 = 16269
Step 18: 16269 + 957 = 17226
Step 19: 17226 + 957 = 18183
Step 20: 18183 + 957 = 19140
Step 21: 19140 + 957 = 20097
Step 22: 20097 + 957 = 21054
Step 23: 21054 + 957 = 22011
Step 24: 22011 + 957 = 22968
Step 25: 22968 + 957 = 23925
Step 26: 23925 + 957 = 24882
Step 27: 24882 + 957 = 25839
Step 28: 25839 + 957 = 26796
Step 29: 26796 + 957 = 27753
Step 30: 27753 + 957 = 28710
Step 31: 28710 + 957 = 29667
Step 32: 29667 + 957 = 30624
Step 33: 30624 + 957 = 31581
Step 34: 31581 + 957 = 32538
Step 35: 32538 + 957 = 33495
Step 36: 33495 + 957 = 34452
Step 37: 34452 + 957 = 35409
Step 38: 35409 + 957 = 36366
Step 39: 36366 + 957 = 37323
Step 40: 37323 + 957 = 38280
Step 41: 38280 + 957 = 39237
Step 42: 39237 + 957 = 40194
Step 43: 40194 + 957 = 41151
Step 44: 41151 + 957 = 42108
Step 45: 42108 + 957 = 43065
Step 46: 43065 + 957 = 44022
Step 47: 44022 + 957 = 44979
Step 48: 44979 + 957 = 45936
Step 49: 45936 + 957 = 46893
Step 50: 46893 + 957 = 47850
Step 51: 47850 + 957 = 48807
Step 52: 48807 + 957 = 49764
Step 53: 49764 + 957 = 50721
Step 54: 50721 + 957 = 51678
Step 55: 51678 + 957 = 52635
Step 56: 52635 + 957 = 53592
Step 57: 53592 + 957 = 54549
Step 58: 54549 + 957 = 55506
Step 59: 55506 + 957 = 56463
Step 60: 56463 + 957 = 57420
Step 61: 57420 + 957 = 58377
Step 62: 58377 + 957 = 59334
Step 63: 59334 + 957 = 60291
Step 64: 60291 + 957 = 61248
Step 65: 61248 + 957 = 62205
Step 66: 62205 + 957 = 63162
Step 67: 63162 + 957 = 64119
Step 68: 64119 + 957 = 65076
Step 69: 65076 + 957 = 66033
Step 70: 66033 + 957 = 66990
Step 71: 66990 + 957 = 67947
Step 72: 67947 + 957 = 68904

So, 957*72 = 68904