We look at the division of 572249 by 21 
Our goal is to divide 572249 by 21.

On to step 1:
21 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (7) from the dividend to 5 and continue with: 57 / 21

Let's proceed to step 2:
When dividing 57 by 21, we get 2 with a remainder of 15.
The next digit of our result is 2. 
Result so far: 2.0
If we take 42 away from 57, we end up with 15.
Include the next digit (2) from the dividend after 15, then repeat: 152 / 21

Step 3:
21 can be fit into 152 7 times, resulting in a remainder of 5.
Put 7 as the next digit of the answer. 
Result so far: 27.0
Deduct 147 from 152 and we're left with 5.
Append the next digit (2) from the dividend to 5 and continue with: 52 / 21

Step 4:
The number 21 fits into 52 2 times, leaving a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 272.0
The remainder is 10 after subtracting 42 from 52.
Include the next digit (4) from the dividend after 10, then repeat: 104 / 21

Let's proceed to step 5:
The number 21 fits into 104 4 times, leaving a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 2724.0
If we take 84 away from 104, we end up with 20.
Take the next digit (9) from the dividend and append it to 20, then repeat: 209 / 21

Going ahead to step 6:
21 can be fit into 209 9 times, resulting in a remainder of 20.
The next digit of our result is 9. 
Result so far: 27249.0
The remainder is 20 after subtracting 189 from 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 7:
The number 21 fits into 200 9 times, leaving a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 27249.9
Subtract 189 from 200 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 8:
21 goes into 110 5 times with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 27249.95
Subtracting 105 from 110 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 9:
21 goes into 50 2 times with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 27249.952
Deduct 42 from 50 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 10:
If we divide 80 by 21, we get 3 and a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 27249.9523
Subtracting 63 from 80 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 11:
If we divide 170 by 21, we get 8 and a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 27249.95238
Subtracting 168 from 170 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 12:
21 can be fit into 20 0 times, resulting in a remainder of 20.
The next digit of our result is 0. 
Result so far: 27249.95238
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 13:
200 divided by 21 is 9 with a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 27249.9523809
If we take 189 away from 200, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 14:
110 divided by 21 is 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 27249.95238095
If we subtract 105 from 110, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Our division results in 27249.95238095 with a remaining 5e-09.