Sure thing, let's get straight to it. We start with 872 and we're going to multiply it by 3, which means adding 872 to itself 3 times.
Step 1: 0 + 872 = 872
Step 2: 872 + 872 = 1744
Step 3: 1744 + 872 = 2616

So, 872*3 = 2616