We look at the division of 657806 by 21 
We want to figure out the number of times 657806 can be divided by 21.

Moving on to step 1:
21 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 21

Going ahead to step 2:
If we divide 65 by 21, we get 3 and a remainder of 2.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 2 after subtracting 63 from 65.
Grab the next digit (7) from the dividend, add it to 2, then carry on: 27 / 21

On to step 3:
If we divide 27 by 21, we get 1 and a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 31.0
Subtracting 21 from 27 leaves us with 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 21

Advancing to step 4:
The number 21 fits into 68 3 times, leaving a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 313.0
If we take 63 away from 68, we end up with 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 21

On to step 5:
When dividing 50 by 21, we get 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 3132.0
If we subtract 42 from 50, we get 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 21

On to step 6:
21 goes into 86 4 times with a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 31324.0
Subtract 84 from 86 to 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.

Step 7:
The number 21 fits into 20 0 times, leaving a remainder of 20.
The next digit of our result is 0. 
Result so far: 31324.0
Deduct 0 from 20 and we're left 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 8:
When dividing 200 by 21, we get 9 with a remainder of 11.
The next digit of our result is 9. 
Result so far: 31324.09
Deduct 189 from 200 and we're left 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.

Going ahead to step 9:
If we divide 110 by 21, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 31324.095
Subtracting 105 from 110 leaves us 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.

On to step 10:
When dividing 50 by 21, we get 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 31324.0952
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 11:
The number 21 fits into 80 3 times, leaving a remainder of 17.
The next digit of our result is 3. 
Result so far: 31324.09523
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.

Let's proceed to step 12:
If we divide 170 by 21, we get 8 and a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 31324.095238
Deduct 168 from 170 and we're left 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.

On to step 13:
20 divided by 21 is 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 31324.095238
Deduct 0 from 20 and we're left 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 14:
If we divide 200 by 21, we get 9 and a remainder of 11.
The next digit of our result is 9. 
Result so far: 31324.09523809
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.

In conclusion, the division gives 31324.09523809 with a balance of 1.1e-08.