OK, let's work through this together. We're starting with 82 and we're going to multiply it by 4, which means we add 82 to itself 4 times.
Step 1: 0 + 82 = 82
Step 2: 82 + 82 = 164
Step 3: 164 + 82 = 246
Step 4: 246 + 82 = 328

So, 82*4 = 328