Alright, let's solve this math problem step by step. First, we have the number 817. 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 817 and add it to itself 18 times.
Step 1: 0 + 817 = 817
Step 2: 817 + 817 = 1634
Step 3: 1634 + 817 = 2451
Step 4: 2451 + 817 = 3268
Step 5: 3268 + 817 = 4085
Step 6: 4085 + 817 = 4902
Step 7: 4902 + 817 = 5719
Step 8: 5719 + 817 = 6536
Step 9: 6536 + 817 = 7353
Step 10: 7353 + 817 = 8170
Step 11: 8170 + 817 = 8987
Step 12: 8987 + 817 = 9804
Step 13: 9804 + 817 = 10621
Step 14: 10621 + 817 = 11438
Step 15: 11438 + 817 = 12255
Step 16: 12255 + 817 = 13072
Step 17: 13072 + 817 = 13889
Step 18: 13889 + 817 = 14706

So, 817*18 = 14706