Let's get this math done. We have 742 and we're going to multiply it by 3. This is the same as taking 742 and adding it to itself 3 times.
Step 1: 0 + 742 = 742
Step 2: 742 + 742 = 1484
Step 3: 1484 + 742 = 2226

So, 742*3 = 2226