OK, let's crack this. We're given 911 and our task is to multiply it by 3. Essentially, we'll be adding 911 to itself 3 times.
Step 1: 0 + 911 = 911
Step 2: 911 + 911 = 1822
Step 3: 1822 + 911 = 2733

So, 911*3 = 2733