We divide 488699 by 21
Let's see how many times 21 fits into 488699.

Advancing to step 1:
21 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (8) from the dividend and append it to 4, then repeat: 48 / 21

On to step 2:
The number 21 fits into 48 2 times, leaving a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 42 from 48 and we're left with 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 21

On to step 3:
21 can be fit into 68 3 times, resulting in a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
If we take 63 away from 68, we end up with 5.
Fetch the next digit (6) from the dividend, attach it to 5 and continue: 56 / 21

Going ahead to step 4:
If we divide 56 by 21, we get 2 and a remainder of 14.
Write down 2 as next digit of the result. 
Result so far: 232.0
If we subtract 42 from 56, we get 14.
Append the next digit (9) from the dividend to 14 and continue with: 149 / 21

Moving on to step 5:
21 goes into 149 7 times with a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 2327.0
Subtracting 147 from 149 leaves us with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 21

Going ahead to step 6:
If we divide 29 by 21, we get 1 and a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 23271.0
If we subtract 21 from 29, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 7:
21 can be fit into 80 3 times, resulting in a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 23271.3
If we subtract 63 from 80, we 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 8:
170 divided by 21 is 8 with a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 23271.38
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 9:
21 can be fit into 20 0 times, resulting in a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 23271.38
Subtracting 0 from 20 leaves us 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.

Advancing to step 10:
If we divide 200 by 21, we get 9 and a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 23271.3809
If we subtract 189 from 200, we 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.

Moving on to step 11:
The number 21 fits into 110 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 23271.38095
Deduct 105 from 110 and we're left 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.

Let's proceed to step 12:
50 divided by 21 is 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 23271.380952
The remainder is 8 after subtracting 42 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 13:
The number 21 fits into 80 3 times, leaving a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 23271.3809523
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.

On to step 14:
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: 23271.38095238
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.

The final outcome is 23271.38095238, with a leftover of 2e-09.