Alright, let's solve this math problem step by step. First, we have the number 517. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 18. So, we're going to take the number 517 and add it to itself 18 times.
Step 1: 0 + 517 = 517
Step 2: 517 + 517 = 1034
Step 3: 1034 + 517 = 1551
Step 4: 1551 + 517 = 2068
Step 5: 2068 + 517 = 2585
Step 6: 2585 + 517 = 3102
Step 7: 3102 + 517 = 3619
Step 8: 3619 + 517 = 4136
Step 9: 4136 + 517 = 4653
Step 10: 4653 + 517 = 5170
Step 11: 5170 + 517 = 5687
Step 12: 5687 + 517 = 6204
Step 13: 6204 + 517 = 6721
Step 14: 6721 + 517 = 7238
Step 15: 7238 + 517 = 7755
Step 16: 7755 + 517 = 8272
Step 17: 8272 + 517 = 8789
Step 18: 8789 + 517 = 9306

So, 517*18 = 9306