Let's get this math done. We have 164 and we're going to multiply it by 4. This is the same as taking 164 and adding it to itself 4 times.
Step 1: 0 + 164 = 164
Step 2: 164 + 164 = 328
Step 3: 328 + 164 = 492
Step 4: 492 + 164 = 656

So, 164*4 = 656