Alright, let's solve this math problem step by step. First, we have the number 587. 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 587 and add it to itself 13 times.
Step 1: 0 + 587 = 587
Step 2: 587 + 587 = 1174
Step 3: 1174 + 587 = 1761
Step 4: 1761 + 587 = 2348
Step 5: 2348 + 587 = 2935
Step 6: 2935 + 587 = 3522
Step 7: 3522 + 587 = 4109
Step 8: 4109 + 587 = 4696
Step 9: 4696 + 587 = 5283
Step 10: 5283 + 587 = 5870
Step 11: 5870 + 587 = 6457
Step 12: 6457 + 587 = 7044
Step 13: 7044 + 587 = 7631

So, 587*13 = 7631