OK, let's crack this. We're given 997 and our task is to multiply it by 3. Essentially, we'll be adding 997 to itself 3 times.
Step 1: 0 + 997 = 997
Step 2: 997 + 997 = 1994
Step 3: 1994 + 997 = 2991

So, 997*3 = 2991