70891 ÷ 9 = 7876 R7
Alright, let's work through the division of 70891 by 9 step by step.

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 (0) of the dividend behind the 7 and repeat the process: 70 / 9

Step 2:
9 goes into 70 7 times with a remainder of 7.
Write down 7 as next digit of of the result. 
Result so far: 7
Subtract 63 from 70 to get 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 9

Step 3:
9 goes into 78 8 times with a remainder of 6.
Write down 8 as next digit of of the result. 
Result so far: 78
Subtract 72 from 78 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: 787
Subtract 63 from 69 to get 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 9

Step 5:
9 goes into 61 6 times with a remainder of 7.
Write down 6 as next digit of of the result. 
Result so far: 7876
Subtract 54 from 61 to get 7.

The final result is 7876 with a remainder of 7.