OK, let's work through this together. We're starting with 730 and we're going to multiply it by 3, which means we add 730 to itself 3 times.
Step 1: 0 + 730 = 730
Step 2: 730 + 730 = 1460
Step 3: 1460 + 730 = 2190

So, 730*3 = 2190