Let's roll up our sleeves and solve this. We have 749 and we're going to multiply it by 3, essentially adding 749 to itself 3 times.
Step 1: 0 + 749 = 749
Step 2: 749 + 749 = 1498
Step 3: 1498 + 749 = 2247

So, 749*3 = 2247