78393 ÷ 9 = 8710 R3
Alright, let's work through the division of 78393 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 (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 (3) of the dividend behind the 6 and repeat the process: 63 / 9

Step 3:
9 goes into 63 7 times with a remainder of 0.
Write down 7 as next digit of of the result. 
Result so far: 87
Subtract 63 from 63 to get 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 9

Step 4:
9 goes into 9 1 times with a remainder of 0.
Write down 1 as next digit of of the result. 
Result so far: 871
Subtract 9 from 9 to get 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 9

Step 5:
9 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of of the result. 
Result so far: 8710
Subtract 0 from 3 to get 3.

The final result is 8710 with a remainder of 3.