We look at the division of 245727 by 21 
Let's see how many times 21 fits into 245727.

On to step 1:
The number 21 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (4) from the dividend and append it to 2, then repeat: 24 / 21

Advancing to step 2:
24 divided by 21 is 1 with a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 21 from 24 and we're left with 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 21

Let's proceed to step 3:
If we divide 35 by 21, we get 1 and a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtract 21 from 35 to get 14.
Include the next digit (7) from the dividend after 14, then repeat: 147 / 21

Going ahead to step 4:
If we divide 147 by 21, we get 7 and a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 117.0
If we take 147 away from 147, we end up with 0.
Bring next digit (2) of the dividend behind the 0 and repeat the process: 2 / 21

On to step 5:
2 divided by 21 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 1170.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (7) from the dividend, add it to 2, then carry on: 27 / 21

Step 6:
If we divide 27 by 21, we get 1 and a remainder of 6.
Put 1 as the next digit of the answer. 
Result so far: 11701.0
Deduct 21 from 27 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 7:
60 divided by 21 is 2 with a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 11701.2
Subtract 42 from 60 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 8:
If we divide 180 by 21, we get 8 and a remainder of 12.
The next digit of our result is 8. 
Result so far: 11701.28
Subtract 168 from 180 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 9:
If we divide 120 by 21, we get 5 and a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 11701.285
Subtracting 105 from 120 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 10:
21 goes into 150 7 times with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 11701.2857
Subtract 147 from 150 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 11:
The number 21 fits into 30 1 times, leaving a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 11701.28571
The remainder is 9 after subtracting 21 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 12:
21 can be fit into 90 4 times, resulting in a remainder of 6.
The next digit of our result is 4. 
Result so far: 11701.285714
If we subtract 84 from 90, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 13:
21 goes into 60 2 times with a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 11701.2857142
Subtract 42 from 60 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 14:
180 divided by 21 is 8 with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 11701.28571428
Subtract 168 from 180 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 11701.28571428, with a leftover of 1.2e-08.