79539 ÷ 8 = 9942 R3
Let's divide 79539 by 8.

Step 1:
8 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 (9) of the dividend behind the 7 and repeat the process: 79 / 8

Step 2:
8 goes into 79 9 times with a remainder of 7.
Write down 9 as next digit of of the result. 
Result so far: 9
Subtract 72 from 79 to get 7.
Bring next digit (5) of the dividend behind the 7 and repeat the process: 75 / 8

Step 3:
8 goes into 75 9 times with a remainder of 3.
Write down 9 as next digit of of the result. 
Result so far: 99
Subtract 72 from 75 to get 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 8

Step 4:
8 goes into 33 4 times with a remainder of 1.
Write down 4 as next digit of of the result. 
Result so far: 994
Subtract 32 from 33 to get 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 8

Step 5:
8 goes into 19 2 times with a remainder of 3.
Write down 2 as next digit of of the result. 
Result so far: 9942
Subtract 16 from 19 to get 3.

The final result is 9942 with a remainder of 3.