238731 divided by 21 
We want to figure out the number of times 238731 can be divided by 21.

Advancing to step 1:
21 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 21

Moving on to step 2:
21 goes into 23 1 times with a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 21 from 23, we get 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 21

On to step 3:
21 can be fit into 28 1 times, resulting in a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
If we subtract 21 from 28, we get 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 21

On to step 4:
The number 21 fits into 77 3 times, leaving a remainder of 14.
Use 3 as the next digit of our solution. 
Result so far: 113.0
Deduct 63 from 77 and we're left with 14.
Append the next digit (3) from the dividend to 14 and continue with: 143 / 21

Going ahead to step 5:
143 divided by 21 is 6 with a remainder of 17.
The number 6 becomes the next digit in our result. 
Result so far: 1136.0
If we take 126 away from 143, we end up with 17.
Take the next digit (1) from the dividend and append it to 17, then repeat: 171 / 21

Advancing to step 6:
21 goes into 171 8 times with a remainder of 3.
Write down 8 as next digit of the result. 
Result so far: 11368.0
Deduct 168 from 171 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 7:
The number 21 fits into 30 1 times, leaving a remainder of 9.
The next digit of our result is 1. 
Result so far: 11368.1
Subtract 21 from 30 to get 9.
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 8:
21 goes into 90 4 times with a remainder of 6.
The next digit of our result is 4. 
Result so far: 11368.14
Deduct 84 from 90 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 9:
When dividing 60 by 21, we get 2 with a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 11368.142
Subtracting 42 from 60 leaves us with 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 10:
When dividing 180 by 21, we get 8 with a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 11368.1428
If we take 168 away from 180, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 11:
21 goes into 120 5 times with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 11368.14285
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.

On to step 12:
21 goes into 150 7 times with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 11368.142857
The remainder is 3 after subtracting 147 from 150.
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 13:
When dividing 30 by 21, we get 1 with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 11368.1428571
If we subtract 21 from 30, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 14:
21 can be fit into 90 4 times, resulting in a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 11368.14285714
Subtracting 84 from 90 leaves us 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.

In conclusion, the division gives 11368.14285714 with a balance of 6e-09.