Sure thing, let's get straight to it. We start with 921 and we're going to multiply it by 3, which means adding 921 to itself 3 times.
Step 1: 0 + 921 = 921
Step 2: 921 + 921 = 1842
Step 3: 1842 + 921 = 2763

So, 921*3 = 2763