Let's divide 31584 by 21
Our goal is to divide 31584 by 21.

Let's proceed to step 1:
21 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 21

Step 2:
21 goes into 31 1 times with a remainder of 10.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 21 from 31 and we're left with 10.
Bring next digit (5) of the dividend behind the 10 and repeat the process: 105 / 21

On to step 3:
When dividing 105 by 21, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 15.0
Subtract 105 from 105 to get 0.
Append the next digit (8) from the dividend to 0 and continue with: 8 / 21

Step 4:
When dividing 8 by 21, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 150.0
Subtract 0 from 8 to get 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 21

Going ahead to step 5:
The number 21 fits into 84 4 times, leaving a remainder of 0.
The next digit of our result is 4. 
Result so far: 1504.0
If we take 84 away from 84, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 6:
21 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1504.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 7:
21 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 1504.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 1504.0 with a balance of 0.0.