Let's roll up our sleeves and solve this. We have 556 and we're going to multiply it by 4, essentially adding 556 to itself 4 times.
Step 1: 0 + 556 = 556
Step 2: 556 + 556 = 1112
Step 3: 1112 + 556 = 1668
Step 4: 1668 + 556 = 2224

So, 556*4 = 2224