OK, let's work through this together. We're starting with 920 and we're going to multiply it by 3, which means we add 920 to itself 3 times.
Step 1: 0 + 920 = 920
Step 2: 920 + 920 = 1840
Step 3: 1840 + 920 = 2760

So, 920*3 = 2760