86659 ÷ 9 = 9628 R7
Let's divide 86659 by 9.

Step 1:
9 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 8 to get 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 9

Step 2:
9 goes into 86 9 times with a remainder of 5.
Write down 9 as next digit of of the result. 
Result so far: 9
Subtract 81 from 86 to get 5.
Bring next digit (6) of the dividend behind the 5 and repeat the process: 56 / 9

Step 3:
9 goes into 56 6 times with a remainder of 2.
Write down 6 as next digit of of the result. 
Result so far: 96
Subtract 54 from 56 to get 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 9

Step 4:
9 goes into 25 2 times with a remainder of 7.
Write down 2 as next digit of of the result. 
Result so far: 962
Subtract 18 from 25 to get 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 9

Step 5:
9 goes into 79 8 times with a remainder of 7.
Write down 8 as next digit of of the result. 
Result so far: 9628
Subtract 72 from 79 to get 7.

The final result is 9628 with a remainder of 7.