Let's roll up our sleeves and solve this. We have 524 and we're going to multiply it by 12, essentially adding 524 to itself 12 times.
Step 1: 0 + 524 = 524
Step 2: 524 + 524 = 1048
Step 3: 1048 + 524 = 1572
Step 4: 1572 + 524 = 2096
Step 5: 2096 + 524 = 2620
Step 6: 2620 + 524 = 3144
Step 7: 3144 + 524 = 3668
Step 8: 3668 + 524 = 4192
Step 9: 4192 + 524 = 4716
Step 10: 4716 + 524 = 5240
Step 11: 5240 + 524 = 5764
Step 12: 5764 + 524 = 6288

So, 524*12 = 6288