25318 ÷ 8 = 3164 R6
We're going to perform division on 25318 with 8 as the divisor.

Step 1:
8 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 2 to get 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 8

Step 2:
8 goes into 25 3 times with a remainder of 1.
Write down 3 as next digit of of the result. 
Result so far: 3
Subtract 24 from 25 to get 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 8

Step 3:
8 goes into 13 1 times with a remainder of 5.
Write down 1 as next digit of of the result. 
Result so far: 31
Subtract 8 from 13 to get 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 8

Step 4:
8 goes into 51 6 times with a remainder of 3.
Write down 6 as next digit of of the result. 
Result so far: 316
Subtract 48 from 51 to get 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 8

Step 5:
8 goes into 38 4 times with a remainder of 6.
Write down 4 as next digit of of the result. 
Result so far: 3164
Subtract 32 from 38 to get 6.

The final result is 3164 with a remainder of 6.