OK, let's work through this together. We're starting with 887 and we're going to multiply it by 3, which means we add 887 to itself 3 times.
Step 1: 0 + 887 = 887
Step 2: 887 + 887 = 1774
Step 3: 1774 + 887 = 2661

So, 887*3 = 2661