Alright, let's solve this math problem step by step. First, we have the number 787. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 72. So, we're going to take the number 787 and add it to itself 72 times.
Step 1: 0 + 787 = 787
Step 2: 787 + 787 = 1574
Step 3: 1574 + 787 = 2361
Step 4: 2361 + 787 = 3148
Step 5: 3148 + 787 = 3935
Step 6: 3935 + 787 = 4722
Step 7: 4722 + 787 = 5509
Step 8: 5509 + 787 = 6296
Step 9: 6296 + 787 = 7083
Step 10: 7083 + 787 = 7870
Step 11: 7870 + 787 = 8657
Step 12: 8657 + 787 = 9444
Step 13: 9444 + 787 = 10231
Step 14: 10231 + 787 = 11018
Step 15: 11018 + 787 = 11805
Step 16: 11805 + 787 = 12592
Step 17: 12592 + 787 = 13379
Step 18: 13379 + 787 = 14166
Step 19: 14166 + 787 = 14953
Step 20: 14953 + 787 = 15740
Step 21: 15740 + 787 = 16527
Step 22: 16527 + 787 = 17314
Step 23: 17314 + 787 = 18101
Step 24: 18101 + 787 = 18888
Step 25: 18888 + 787 = 19675
Step 26: 19675 + 787 = 20462
Step 27: 20462 + 787 = 21249
Step 28: 21249 + 787 = 22036
Step 29: 22036 + 787 = 22823
Step 30: 22823 + 787 = 23610
Step 31: 23610 + 787 = 24397
Step 32: 24397 + 787 = 25184
Step 33: 25184 + 787 = 25971
Step 34: 25971 + 787 = 26758
Step 35: 26758 + 787 = 27545
Step 36: 27545 + 787 = 28332
Step 37: 28332 + 787 = 29119
Step 38: 29119 + 787 = 29906
Step 39: 29906 + 787 = 30693
Step 40: 30693 + 787 = 31480
Step 41: 31480 + 787 = 32267
Step 42: 32267 + 787 = 33054
Step 43: 33054 + 787 = 33841
Step 44: 33841 + 787 = 34628
Step 45: 34628 + 787 = 35415
Step 46: 35415 + 787 = 36202
Step 47: 36202 + 787 = 36989
Step 48: 36989 + 787 = 37776
Step 49: 37776 + 787 = 38563
Step 50: 38563 + 787 = 39350
Step 51: 39350 + 787 = 40137
Step 52: 40137 + 787 = 40924
Step 53: 40924 + 787 = 41711
Step 54: 41711 + 787 = 42498
Step 55: 42498 + 787 = 43285
Step 56: 43285 + 787 = 44072
Step 57: 44072 + 787 = 44859
Step 58: 44859 + 787 = 45646
Step 59: 45646 + 787 = 46433
Step 60: 46433 + 787 = 47220
Step 61: 47220 + 787 = 48007
Step 62: 48007 + 787 = 48794
Step 63: 48794 + 787 = 49581
Step 64: 49581 + 787 = 50368
Step 65: 50368 + 787 = 51155
Step 66: 51155 + 787 = 51942
Step 67: 51942 + 787 = 52729
Step 68: 52729 + 787 = 53516
Step 69: 53516 + 787 = 54303
Step 70: 54303 + 787 = 55090
Step 71: 55090 + 787 = 55877
Step 72: 55877 + 787 = 56664

So, 787*72 = 56664