91078 ÷ 9 = 10119 R7
Let's divide 91078 by 9.

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

Step 2:
9 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of of the result. 
Result so far: 10
Subtract 0 from 1 to get 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 9

Step 3:
9 goes into 10 1 times with a remainder of 1.
Write down 1 as next digit of of the result. 
Result so far: 101
Subtract 9 from 10 to get 1.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 9

Step 4:
9 goes into 17 1 times with a remainder of 8.
Write down 1 as next digit of of the result. 
Result so far: 1011
Subtract 9 from 17 to get 8.
Bring next digit (8) of the dividend behind the 8 and repeat the process: 88 / 9

Step 5:
9 goes into 88 9 times with a remainder of 7.
Write down 9 as next digit of of the result. 
Result so far: 10119
Subtract 81 from 88 to get 7.

The final result is 10119 with a remainder of 7.