Sure thing, let's get straight to it. We start with 879 and we're going to multiply it by 5, which means adding 879 to itself 5 times.
Step 1: 0 + 879 = 879
Step 2: 879 + 879 = 1758
Step 3: 1758 + 879 = 2637
Step 4: 2637 + 879 = 3516
Step 5: 3516 + 879 = 4395

So, 879*5 = 4395