We divide 991824 by 21
We're looking to find how many times 21 goes into 991824.

Advancing to step 1:
9 divided by 21 is 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 21

Let's proceed to step 2:
The number 21 fits into 99 4 times, leaving a remainder of 15.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 84 from 99 leaves us with 15.
Grab the next digit (1) from the dividend, add it to 15, then carry on: 151 / 21

Advancing to step 3:
21 goes into 151 7 times with a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 47.0
The remainder is 4 after subtracting 147 from 151.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 21

Let's proceed to step 4:
21 goes into 48 2 times with a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 472.0
Deduct 42 from 48 and we're left with 6.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 21

Step 5:
If we divide 62 by 21, we get 2 and a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 4722.0
Subtracting 42 from 62 leaves us with 20.
Take the next digit (4) from the dividend and append it to 20, then repeat: 204 / 21

Advancing to step 6:
When dividing 204 by 21, we get 9 with a remainder of 15.
The next digit of our result is 9. 
Result so far: 47229.0
If we subtract 189 from 204, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 7:
The number 21 fits into 150 7 times, leaving a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 47229.7
The remainder is 3 after subtracting 147 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 8:
21 can be fit into 30 1 times, resulting in a remainder of 9.
The next digit of our result is 1. 
Result so far: 47229.71
The remainder is 9 after subtracting 21 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 9:
90 divided by 21 is 4 with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 47229.714
Subtracting 84 from 90 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 10:
60 divided by 21 is 2 with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 47229.7142
Subtract 42 from 60 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 11:
When dividing 180 by 21, we get 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 47229.71428
Deduct 168 from 180 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 12:
120 divided by 21 is 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 47229.714285
The remainder is 15 after subtracting 105 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 13:
150 divided by 21 is 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 47229.7142857
Subtracting 147 from 150 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 14:
The number 21 fits into 30 1 times, leaving a remainder of 9.
The next digit of our result is 1. 
Result so far: 47229.71428571
If we take 21 away from 30, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

In conclusion, the division gives 47229.71428571 with a balance of 9e-09.