685568 divided by 21 
Let's see how many times 21 fits into 685568.

Going ahead to step 1:
21 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 21

Let's proceed to step 2:
21 goes into 68 3 times with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 63 from 68 and we're left with 5.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 21

Going ahead to step 3:
The number 21 fits into 55 2 times, leaving a remainder of 13.
Record the quotient 2 as the next digit in the result. 
Result so far: 32.0
Subtracting 42 from 55 leaves us with 13.
Include the next digit (5) from the dividend after 13, then repeat: 135 / 21

Going ahead to step 4:
21 goes into 135 6 times with a remainder of 9.
Record the quotient 6 as the next digit in the result. 
Result so far: 326.0
The remainder is 9 after subtracting 126 from 135.
Take the next digit (6) from the dividend and append it to 9, then repeat: 96 / 21

Let's proceed to step 5:
If we divide 96 by 21, we get 4 and a remainder of 12.
Put 4 as the next digit of the answer. 
Result so far: 3264.0
If we subtract 84 from 96, we get 12.
Include the next digit (8) from the dividend after 12, then repeat: 128 / 21

On to step 6:
21 goes into 128 6 times with a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 32646.0
The remainder is 2 after subtracting 126 from 128.
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:
20 divided by 21 is 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 32646.0
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
The number 21 fits into 200 9 times, leaving a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 32646.09
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.

On to step 9:
If we divide 110 by 21, we get 5 and a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 32646.095
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.
The next digit of our result is 2. 
Result so far: 32646.0952
Subtracting 42 from 50 leaves us 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.

Moving on to step 11:
The number 21 fits into 80 3 times, leaving a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 32646.09523
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.

Advancing to step 12:
21 goes into 170 8 times with a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 32646.095238
If we subtract 168 from 170, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 13:
21 goes into 20 0 times with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 32646.095238
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 14:
21 can be fit into 200 9 times, resulting in a remainder of 11.
The next digit of our result is 9. 
Result so far: 32646.09523809
Subtracting 189 from 200 leaves us 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.

The final outcome is 32646.09523809, with a leftover of 1.1e-08.