OK, let's crack this. We're given 89 and our task is to multiply it by 5. Essentially, we'll be adding 89 to itself 5 times.
Step 1: 0 + 89 = 89
Step 2: 89 + 89 = 178
Step 3: 178 + 89 = 267
Step 4: 267 + 89 = 356
Step 5: 356 + 89 = 445

So, 89*5 = 445