70451 ÷ 9 = 7827 R8
Alright, let's work through the division of 70451 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 (4) of the dividend behind the 7 and repeat the process: 74 / 9

Step 3:
9 goes into 74 8 times with a remainder of 2.
Write down 8 as next digit of of the result. 
Result so far: 78
Subtract 72 from 74 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: 782
Subtract 18 from 25 to get 7.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 9

Step 5:
9 goes into 71 7 times with a remainder of 8.
Write down 7 as next digit of of the result. 
Result so far: 7827
Subtract 63 from 71 to get 8.

The final result is 7827 with a remainder of 8.