Let's get this math done. We have 557 and we're going to multiply it by 12. This is the same as taking 557 and adding 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