Sure thing, let's get straight to it. We start with 27 and we're going to multiply it by 5, which means adding 27 to itself 5 times.
Step 1: 0 + 27 = 27
Step 2: 27 + 27 = 54
Step 3: 54 + 27 = 81
Step 4: 81 + 27 = 108
Step 5: 108 + 27 = 135

So, 27*5 = 135