Alright, let's solve this math problem step by step. First, we have the number 933. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 13. So, we're going to take the number 933 and add it to itself 13 times.
Step 1: 0 + 933 = 933
Step 2: 933 + 933 = 1866
Step 3: 1866 + 933 = 2799
Step 4: 2799 + 933 = 3732
Step 5: 3732 + 933 = 4665
Step 6: 4665 + 933 = 5598
Step 7: 5598 + 933 = 6531
Step 8: 6531 + 933 = 7464
Step 9: 7464 + 933 = 8397
Step 10: 8397 + 933 = 9330
Step 11: 9330 + 933 = 10263
Step 12: 10263 + 933 = 11196
Step 13: 11196 + 933 = 12129

So, 933*13 = 12129