Alright, let's solve this math problem step by step. First, we have the number 712. 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 712 and add it to itself 18 times.
Step 1: 0 + 712 = 712
Step 2: 712 + 712 = 1424
Step 3: 1424 + 712 = 2136
Step 4: 2136 + 712 = 2848
Step 5: 2848 + 712 = 3560
Step 6: 3560 + 712 = 4272
Step 7: 4272 + 712 = 4984
Step 8: 4984 + 712 = 5696
Step 9: 5696 + 712 = 6408
Step 10: 6408 + 712 = 7120
Step 11: 7120 + 712 = 7832
Step 12: 7832 + 712 = 8544
Step 13: 8544 + 712 = 9256
Step 14: 9256 + 712 = 9968
Step 15: 9968 + 712 = 10680
Step 16: 10680 + 712 = 11392
Step 17: 11392 + 712 = 12104
Step 18: 12104 + 712 = 12816

So, 712*18 = 12816