Sure thing! We've got 511 and we're gonna multiply it by 9. That's the same as adding 511 to itself 9 times.
Step 1: 0 + 511 = 511
Step 2: 511 + 511 = 1022
Step 3: 1022 + 511 = 1533
Step 4: 1533 + 511 = 2044
Step 5: 2044 + 511 = 2555
Step 6: 2555 + 511 = 3066
Step 7: 3066 + 511 = 3577
Step 8: 3577 + 511 = 4088
Step 9: 4088 + 511 = 4599

So, 511*9 = 4599