OK, let's crack this. We're given 822 and our task is to multiply it by 3. Essentially, we'll be adding 822 to itself 3 times.
Step 1: 0 + 822 = 822
Step 2: 822 + 822 = 1644
Step 3: 1644 + 822 = 2466

So, 822*3 = 2466