OK, let's crack this. We're given 165 and our task is to multiply it by 9. Essentially, we'll be adding 165 to itself 9 times.
Step 1: 0 + 165 = 165
Step 2: 165 + 165 = 330
Step 3: 330 + 165 = 495
Step 4: 495 + 165 = 660
Step 5: 660 + 165 = 825
Step 6: 825 + 165 = 990
Step 7: 990 + 165 = 1155
Step 8: 1155 + 165 = 1320
Step 9: 1320 + 165 = 1485

So, 165*9 = 1485