OK, let's crack this. We're given 709 and our task is to multiply it by 3. Essentially, we'll be adding 709 to itself 3 times.
Step 1: 0 + 709 = 709
Step 2: 709 + 709 = 1418
Step 3: 1418 + 709 = 2127

So, 709*3 = 2127