OK, let's crack this. We're given 963 and our task is to multiply it by 3. Essentially, we'll be adding 963 to itself 3 times.
Step 1: 0 + 963 = 963
Step 2: 963 + 963 = 1926
Step 3: 1926 + 963 = 2889

So, 963*3 = 2889