OK, let's crack this. We're given 910 and our task is to multiply it by 3. Essentially, we'll be adding 910 to itself 3 times.
Step 1: 0 + 910 = 910
Step 2: 910 + 910 = 1820
Step 3: 1820 + 910 = 2730

So, 910*3 = 2730