Sure thing, let's get straight to it. We start with 12 and we're going to multiply it by 4, which means adding 12 to itself 4 times.
Step 1: 0 + 12 = 12
Step 2: 12 + 12 = 24
Step 3: 24 + 12 = 36
Step 4: 36 + 12 = 48

So, 12*4 = 48