Let's roll up our sleeves and solve this. We have 32 and we're going to multiply it by 4, essentially adding 32 to itself 4 times.
Step 1: 0 + 32 = 32
Step 2: 32 + 32 = 64
Step 3: 64 + 32 = 96
Step 4: 96 + 32 = 128

So, 32*4 = 128