OK, let's work through this together. We're starting with 328 and we're going to multiply it by 4, which means we add 328 to itself 4 times.
Step 1: 0 + 328 = 328
Step 2: 328 + 328 = 656
Step 3: 656 + 328 = 984
Step 4: 984 + 328 = 1312

So, 328*4 = 1312