71782 ÷ 9 = 7975 R7
Let's divide 71782 by 9.

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 (1) of the dividend behind the 7 and repeat the process: 71 / 9

Step 2:
9 goes into 71 7 times with a remainder of 8.
Write down 7 as next digit of of the result. 
Result so far: 7
Subtract 63 from 71 to get 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 9

Step 3:
9 goes into 87 9 times with a remainder of 6.
Write down 9 as next digit of of the result. 
Result so far: 79
Subtract 81 from 87 to get 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 9

Step 4:
9 goes into 68 7 times with a remainder of 5.
Write down 7 as next digit of of the result. 
Result so far: 797
Subtract 63 from 68 to get 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 9

Step 5:
9 goes into 52 5 times with a remainder of 7.
Write down 5 as next digit of of the result. 
Result so far: 7975
Subtract 45 from 52 to get 7.

The final result is 7975 with a remainder of 7.