931688 divided by 21 
We're looking to find how many times 21 goes into 931688.

On to step 1:
When dividing 9 by 21, we get 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Fetch the next digit (3) from the dividend, attach it to 9 and continue: 93 / 21

Moving on to step 2:
21 goes into 93 4 times with a remainder of 9.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 84 from 93 to get 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 21

Let's proceed to step 3:
21 goes into 91 4 times with a remainder of 7.
The number 4 becomes the next digit in our result. 
Result so far: 44.0
If we take 84 away from 91, we end up with 7.
Append the next digit (6) from the dividend to 7 and continue with: 76 / 21

Going ahead to step 4:
21 goes into 76 3 times with a remainder of 13.
Write down 3 as next digit of the result. 
Result so far: 443.0
If we take 63 away from 76, we end up with 13.
Fetch the next digit (8) from the dividend, attach it to 13 and continue: 138 / 21

Moving on to step 5:
The number 21 fits into 138 6 times, leaving a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 4436.0
The remainder is 12 after subtracting 126 from 138.
Grab the next digit (8) from the dividend, add it to 12, then carry on: 128 / 21

Step 6:
When dividing 128 by 21, we get 6 with a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 44366.0
Deduct 126 from 128 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 7:
20 divided by 21 is 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 44366.0
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.

Moving on to step 8:
The number 21 fits into 200 9 times, leaving a remainder of 11.
The next digit of our result is 9. 
Result so far: 44366.09
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.

Advancing to step 9:
21 goes into 110 5 times with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 44366.095
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.

Advancing to step 10:
21 can be fit into 50 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 44366.0952
If we take 42 away from 50, we end up 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.

Step 11:
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: 44366.09523
The remainder is 17 after subtracting 63 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 12:
21 can be fit into 170 8 times, resulting in a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 44366.095238
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.

Step 13:
When dividing 20 by 21, we get 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 44366.095238
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:
200 divided by 21 is 9 with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 44366.09523809
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.

In conclusion, the division gives 44366.09523809 with a balance of 1.1e-08.