OK, let's work through this together. We're starting with 854 and we're going to multiply it by 4, which means we add 854 to itself 4 times.
Step 1: 0 + 854 = 854
Step 2: 854 + 854 = 1708
Step 3: 1708 + 854 = 2562
Step 4: 2562 + 854 = 3416

So, 854*4 = 3416