We divide 501881 by 21
Let's see how many times 21 fits into 501881.

Going ahead to step 1:
21 can be fit into 5 0 times, resulting in 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.
Include the next digit (0) from the dividend after 5, then repeat: 50 / 21

On to step 2:
When dividing 50 by 21, we get 2 with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 42 from 50 leaves us with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 21

On to step 3:
21 goes into 81 3 times with a remainder of 18.
Write down 3 as next digit of the result. 
Result so far: 23.0
If we subtract 63 from 81, we get 18.
Include the next digit (8) from the dividend after 18, then repeat: 188 / 21

Let's proceed to step 4:
If we divide 188 by 21, we get 8 and a remainder of 20.
Use 8 as the next digit of our solution. 
Result so far: 238.0
If we subtract 168 from 188, we get 20.
Fetch the next digit (8) from the dividend, attach it to 20 and continue: 208 / 21

Step 5:
The number 21 fits into 208 9 times, leaving a remainder of 19.
Put 9 as the next digit of the answer. 
Result so far: 2389.0
If we subtract 189 from 208, we get 19.
Fetch the next digit (1) from the dividend, attach it to 19 and continue: 191 / 21

Moving on to step 6:
If we divide 191 by 21, we get 9 and a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 23899.0
The remainder is 2 after subtracting 189 from 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 7:
When dividing 20 by 21, we get 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 23899.0
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 8:
21 goes into 200 9 times with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 23899.09
The remainder is 11 after subtracting 189 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 9:
The number 21 fits into 110 5 times, leaving a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 23899.095
Subtract 105 from 110 to 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.

Going ahead to step 10:
21 can be fit into 50 2 times, resulting in a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 23899.0952
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.

On to step 11:
If we divide 80 by 21, we get 3 and a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 23899.09523
Subtract 63 from 80 to get 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 12:
If we divide 170 by 21, we get 8 and a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 23899.095238
If we take 168 away from 170, we end up 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.

Advancing to step 13:
20 divided by 21 is 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 23899.095238
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 14:
The number 21 fits into 200 9 times, leaving a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 23899.09523809
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.

After the division, we end up with 23899.09523809 and a remainder of 1.1e-08.