Let's roll up our sleeves and solve this. We have 735 and we're going to multiply it by 3, essentially adding 735 to itself 3 times.
Step 1: 0 + 735 = 735
Step 2: 735 + 735 = 1470
Step 3: 1470 + 735 = 2205

So, 735*3 = 2205