78170 ÷ 9 = 8685 R5
Sure thing! Let's divide 78170 by 9 together.

Step 1:
9 goes into 7 0 times with a remainder of 7.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 7 to get 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 9

Step 2:
9 goes into 78 8 times with a remainder of 6.
Write down 8 as next digit of of the result. 
Result so far: 8
Subtract 72 from 78 to get 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 9

Step 3:
9 goes into 61 6 times with a remainder of 7.
Write down 6 as next digit of of the result. 
Result so far: 86
Subtract 54 from 61 to get 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 9

Step 4:
9 goes into 77 8 times with a remainder of 5.
Write down 8 as next digit of of the result. 
Result so far: 868
Subtract 72 from 77 to get 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 9

Step 5:
9 goes into 50 5 times with a remainder of 5.
Write down 5 as next digit of of the result. 
Result so far: 8685
Subtract 45 from 50 to get 5.

The final result is 8685 with a remainder of 5.