21492 ÷ 8 = 2686 R4
No problem, we've got 21492 and 8 for the division.

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 (1) of the dividend behind the 2 and repeat the process: 21 / 8

Step 2:
8 goes into 21 2 times with a remainder of 5.
Write down 2 as next digit of of the result. 
Result so far: 2
Subtract 16 from 21 to get 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 8

Step 3:
8 goes into 54 6 times with a remainder of 6.
Write down 6 as next digit of of the result. 
Result so far: 26
Subtract 48 from 54 to get 6.
Bring next digit (9) of the dividend behind the 6 and repeat the process: 69 / 8

Step 4:
8 goes into 69 8 times with a remainder of 5.
Write down 8 as next digit of of the result. 
Result so far: 268
Subtract 64 from 69 to get 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 8

Step 5:
8 goes into 52 6 times with a remainder of 4.
Write down 6 as next digit of of the result. 
Result so far: 2686
Subtract 48 from 52 to get 4.

The final result is 2686 with a remainder of 4.