We look at the division of 237582 by 21 
We want to divide 237582 by 21.

Going ahead to step 1:
21 can be fit into 2 0 times, resulting in a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 21

Moving on to step 2:
21 can be fit into 23 1 times, resulting in a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 21 from 23, we get 2.
Grab the next digit (7) from the dividend, add it to 2, then carry on: 27 / 21

Step 3:
When dividing 27 by 21, we get 1 with a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 11.0
Subtract 21 from 27 to get 6.
Include the next digit (5) from the dividend after 6, then repeat: 65 / 21

On to step 4:
When dividing 65 by 21, we get 3 with a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 113.0
Subtract 63 from 65 to get 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 21

Let's proceed to step 5:
If we divide 28 by 21, we get 1 and a remainder of 7.
The next digit of our result is 1. 
Result so far: 1131.0
Deduct 21 from 28 and we're left with 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 21

Going ahead to step 6:
If we divide 72 by 21, we get 3 and a remainder of 9.
Put 3 as the next digit of the answer. 
Result so far: 11313.0
Deduct 63 from 72 and we're left with 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 7:
When dividing 90 by 21, we get 4 with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 11313.4
Subtract 84 from 90 to 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.

Going ahead to step 8:
When dividing 60 by 21, we get 2 with a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 11313.42
The remainder is 18 after subtracting 42 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 9:
180 divided by 21 is 8 with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 11313.428
If we subtract 168 from 180, we 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.

Going ahead to step 10:
120 divided by 21 is 5 with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 11313.4285
Deduct 105 from 120 and we're left 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.

Moving on to step 11:
21 goes into 150 7 times with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 11313.42857
Deduct 147 from 150 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.

Going ahead to step 12:
21 goes into 30 1 times with a remainder of 9.
The next digit of our result is 1. 
Result so far: 11313.428571
Subtracting 21 from 30 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 13:
21 goes into 90 4 times with a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 11313.4285714
If we take 84 away from 90, we end up 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.

On to step 14:
The number 21 fits into 60 2 times, leaving a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 11313.42857142
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.

After the division, we end up with 11313.42857142 and a remainder of 1.8e-08.