OK, let's work through this together. We're starting with 703 and we're going to multiply it by 5, which means we add 703 to itself 5 times.
Step 1: 0 + 703 = 703
Step 2: 703 + 703 = 1406
Step 3: 1406 + 703 = 2109
Step 4: 2109 + 703 = 2812
Step 5: 2812 + 703 = 3515

So, 703*5 = 3515