We look at the division of 843231 by 99 
Let's see how many times 99 fits into 843231.

Going ahead to step 1:
8 divided by 99 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (4) of the dividend behind the 8 and repeat the process: 84 / 99

Advancing to step 2:
99 can be fit into 84 0 times, resulting in a remainder of 84.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 84 to get 84.
Fetch the next digit (3) from the dividend, attach it to 84 and continue: 843 / 99

Step 3:
If we divide 843 by 99, we get 8 and a remainder of 51.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtracting 792 from 843 leaves us with 51.
Fetch the next digit (2) from the dividend, attach it to 51 and continue: 512 / 99

Going ahead to step 4:
When dividing 512 by 99, we get 5 with a remainder of 17.
The next digit of our result is 5. 
Result so far: 85.0
If we take 495 away from 512, we end up with 17.
Grab the next digit (3) from the dividend, add it to 17, then carry on: 173 / 99

On to step 5:
When dividing 173 by 99, we get 1 with a remainder of 74.
Use 1 as the next digit of our solution. 
Result so far: 851.0
Subtracting 99 from 173 leaves us with 74.
Append the next digit (1) from the dividend to 74 and continue with: 741 / 99

Advancing to step 6:
The number 99 fits into 741 7 times, leaving a remainder of 48.
The next digit of our result is 7. 
Result so far: 8517.0
If we subtract 693 from 741, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 7:
When dividing 480 by 99, we get 4 with a remainder of 84.
The number 4 becomes the next digit in our result. 
Result so far: 8517.4
Subtracting 396 from 480 leaves us with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

On to step 8:
840 divided by 99 is 8 with a remainder of 48.
Write down 8 as next digit of the result. 
Result so far: 8517.48
If we take 792 away from 840, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 9:
99 goes into 480 4 times with a remainder of 84.
Use 4 as the next digit of our solution. 
Result so far: 8517.484
Deduct 396 from 480 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Advancing to step 10:
The number 99 fits into 840 8 times, leaving a remainder of 48.
The number 8 becomes the next digit in our result. 
Result so far: 8517.4848
Deduct 792 from 840 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 11:
99 goes into 480 4 times with a remainder of 84.
Put 4 as the next digit of the answer. 
Result so far: 8517.48484
If we subtract 396 from 480, we get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Moving on to step 12:
840 divided by 99 is 8 with a remainder of 48.
Write down 8 as next digit of the result. 
Result so far: 8517.484848
Subtracting 792 from 840 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 13:
When dividing 480 by 99, we get 4 with a remainder of 84.
Use 4 as the next digit of our solution. 
Result so far: 8517.4848484
Deduct 396 from 480 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

On to step 14:
99 can be fit into 840 8 times, resulting in a remainder of 48.
Put 8 as the next digit of the answer. 
Result so far: 8517.48484848
If we take 792 away from 840, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

After the division, we end up with 8517.48484848 and a remainder of 4.8e-08.