Let's divide 599592 by 21
Let's see how many times 21 fits into 599592.

Moving on to step 1:
The number 21 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (9) from the dividend to 5 and continue with: 59 / 21

Going ahead to step 2:
21 goes into 59 2 times with a remainder of 17.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 42 from 59 to get 17.
Append the next digit (9) from the dividend to 17 and continue with: 179 / 21

Let's proceed to step 3:
21 goes into 179 8 times with a remainder of 11.
The next digit of our result is 8. 
Result so far: 28.0
Subtract 168 from 179 to get 11.
Bring next digit (5) of the dividend behind the 11 and repeat the process: 115 / 21

On to step 4:
If we divide 115 by 21, we get 5 and a remainder of 10.
The next digit of our result is 5. 
Result so far: 285.0
Subtract 105 from 115 to get 10.
Bring next digit (9) of the dividend behind the 10 and repeat the process: 109 / 21

On to step 5:
If we divide 109 by 21, we get 5 and a remainder of 4.
The number 5 becomes the next digit in our result. 
Result so far: 2855.0
Deduct 105 from 109 and we're left with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 21

Step 6:
21 can be fit into 42 2 times, resulting in a remainder of 0.
The next digit of our result is 2. 
Result so far: 28552.0
Subtract 42 from 42 to 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.

Let's proceed to step 7:
If we divide 0 by 21, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 28552.0
Subtract 0 from 0 to 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.

Moving on to step 8:
If we divide 0 by 21, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 28552.0
Subtracting 0 from 0 leaves us 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.

Our division results in 28552.0 with a remaining 0.0.