OK, let's work through this together. We're starting with 818 and we're going to multiply it by 12, which means we add 818 to itself 12 times.
Step 1: 0 + 818 = 818
Step 2: 818 + 818 = 1636
Step 3: 1636 + 818 = 2454
Step 4: 2454 + 818 = 3272
Step 5: 3272 + 818 = 4090
Step 6: 4090 + 818 = 4908
Step 7: 4908 + 818 = 5726
Step 8: 5726 + 818 = 6544
Step 9: 6544 + 818 = 7362
Step 10: 7362 + 818 = 8180
Step 11: 8180 + 818 = 8998
Step 12: 8998 + 818 = 9816

So, 818*12 = 9816