OK, let's crack this. We're given 711 and our task is to multiply it by 3. Essentially, we'll be adding 711 to itself 3 times.
Step 1: 0 + 711 = 711
Step 2: 711 + 711 = 1422
Step 3: 1422 + 711 = 2133

So, 711*3 = 2133