Alright, let's solve this math problem step by step. First, we have the number 557. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 12. So, we're going to take the number 557 and add it to itself 12 times.
Step 1: 0 + 557 = 557
Step 2: 557 + 557 = 1114
Step 3: 1114 + 557 = 1671
Step 4: 1671 + 557 = 2228
Step 5: 2228 + 557 = 2785
Step 6: 2785 + 557 = 3342
Step 7: 3342 + 557 = 3899
Step 8: 3899 + 557 = 4456
Step 9: 4456 + 557 = 5013
Step 10: 5013 + 557 = 5570
Step 11: 5570 + 557 = 6127
Step 12: 6127 + 557 = 6684

So, 557*12 = 6684