OK, let's work through this together. We're starting with 366 and we're going to multiply it by 3, which means we add 366 to itself 3 times.
Step 1: 0 + 366 = 366
Step 2: 366 + 366 = 732
Step 3: 732 + 366 = 1098

So, 366*3 = 1098