1509 ÷ 9 = 167 R6
We're going to perform division on 1509 with 9 as the divisor.

Step 1:
9 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 1 to get 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 9

Step 2:
9 goes into 15 1 times with a remainder of 6.
Write down 1 as next digit of of the result. 
Result so far: 1
Subtract 9 from 15 to get 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 9

Step 3:
9 goes into 60 6 times with a remainder of 6.
Write down 6 as next digit of of the result. 
Result so far: 16
Subtract 54 from 60 to get 6.
Bring next digit (9) of the dividend behind the 6 and repeat the process: 69 / 9

Step 4:
9 goes into 69 7 times with a remainder of 6.
Write down 7 as next digit of of the result. 
Result so far: 167
Subtract 63 from 69 to get 6.

The final result is 167 with a remainder of 6.