OK, let's work through this together. We're starting with 947 and we're going to multiply it by 4, which means we add 947 to itself 4 times.
Step 1: 0 + 947 = 947
Step 2: 947 + 947 = 1894
Step 3: 1894 + 947 = 2841
Step 4: 2841 + 947 = 3788

So, 947*4 = 3788