18331 ÷ 8 = 2291 R3
We're going to perform division on 18331 with 8 as the divisor.

Step 1:
8 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 1 to get 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 8

Step 2:
8 goes into 18 2 times with a remainder of 2.
Write down 2 as next digit of of the result. 
Result so far: 2
Subtract 16 from 18 to get 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 8

Step 3:
8 goes into 23 2 times with a remainder of 7.
Write down 2 as next digit of of the result. 
Result so far: 22
Subtract 16 from 23 to get 7.
Bring next digit (3) of the dividend behind the 7 and repeat the process: 73 / 8

Step 4:
8 goes into 73 9 times with a remainder of 1.
Write down 9 as next digit of of the result. 
Result so far: 229
Subtract 72 from 73 to get 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 8

Step 5:
8 goes into 11 1 times with a remainder of 3.
Write down 1 as next digit of of the result. 
Result so far: 2291
Subtract 8 from 11 to get 3.

The final result is 2291 with a remainder of 3.