OK, let's work through this together. We're starting with 700 and we're going to multiply it by 3, which means we add 700 to itself 3 times.
Step 1: 0 + 700 = 700
Step 2: 700 + 700 = 1400
Step 3: 1400 + 700 = 2100

So, 700*3 = 2100