Alright, let's solve this math problem step by step. First, we have the number 788. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 66. So, we're going to take the number 788 and add it to itself 66 times.
Step 1: 0 + 788 = 788
Step 2: 788 + 788 = 1576
Step 3: 1576 + 788 = 2364
Step 4: 2364 + 788 = 3152
Step 5: 3152 + 788 = 3940
Step 6: 3940 + 788 = 4728
Step 7: 4728 + 788 = 5516
Step 8: 5516 + 788 = 6304
Step 9: 6304 + 788 = 7092
Step 10: 7092 + 788 = 7880
Step 11: 7880 + 788 = 8668
Step 12: 8668 + 788 = 9456
Step 13: 9456 + 788 = 10244
Step 14: 10244 + 788 = 11032
Step 15: 11032 + 788 = 11820
Step 16: 11820 + 788 = 12608
Step 17: 12608 + 788 = 13396
Step 18: 13396 + 788 = 14184
Step 19: 14184 + 788 = 14972
Step 20: 14972 + 788 = 15760
Step 21: 15760 + 788 = 16548
Step 22: 16548 + 788 = 17336
Step 23: 17336 + 788 = 18124
Step 24: 18124 + 788 = 18912
Step 25: 18912 + 788 = 19700
Step 26: 19700 + 788 = 20488
Step 27: 20488 + 788 = 21276
Step 28: 21276 + 788 = 22064
Step 29: 22064 + 788 = 22852
Step 30: 22852 + 788 = 23640
Step 31: 23640 + 788 = 24428
Step 32: 24428 + 788 = 25216
Step 33: 25216 + 788 = 26004
Step 34: 26004 + 788 = 26792
Step 35: 26792 + 788 = 27580
Step 36: 27580 + 788 = 28368
Step 37: 28368 + 788 = 29156
Step 38: 29156 + 788 = 29944
Step 39: 29944 + 788 = 30732
Step 40: 30732 + 788 = 31520
Step 41: 31520 + 788 = 32308
Step 42: 32308 + 788 = 33096
Step 43: 33096 + 788 = 33884
Step 44: 33884 + 788 = 34672
Step 45: 34672 + 788 = 35460
Step 46: 35460 + 788 = 36248
Step 47: 36248 + 788 = 37036
Step 48: 37036 + 788 = 37824
Step 49: 37824 + 788 = 38612
Step 50: 38612 + 788 = 39400
Step 51: 39400 + 788 = 40188
Step 52: 40188 + 788 = 40976
Step 53: 40976 + 788 = 41764
Step 54: 41764 + 788 = 42552
Step 55: 42552 + 788 = 43340
Step 56: 43340 + 788 = 44128
Step 57: 44128 + 788 = 44916
Step 58: 44916 + 788 = 45704
Step 59: 45704 + 788 = 46492
Step 60: 46492 + 788 = 47280
Step 61: 47280 + 788 = 48068
Step 62: 48068 + 788 = 48856
Step 63: 48856 + 788 = 49644
Step 64: 49644 + 788 = 50432
Step 65: 50432 + 788 = 51220
Step 66: 51220 + 788 = 52008

So, 788*66 = 52008