We look at the division of 393131 by 99 
We want to divide 393131 by 99.

Advancing to step 1:
99 goes into 3 0 times with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 99

Advancing to step 2:
If we divide 39 by 99, we get 0 and a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Append the next digit (3) from the dividend to 39 and continue with: 393 / 99

Let's proceed to step 3:
If we divide 393 by 99, we get 3 and a remainder of 96.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 297 from 393, we get 96.
Take the next digit (1) from the dividend and append it to 96, then repeat: 961 / 99

Let's proceed to step 4:
When dividing 961 by 99, we get 9 with a remainder of 70.
Write down 9 as next digit of the result. 
Result so far: 39.0
The remainder is 70 after subtracting 891 from 961.
Take the next digit (3) from the dividend and append it to 70, then repeat: 703 / 99

Let's proceed to step 5:
If we divide 703 by 99, we get 7 and a remainder of 10.
The next digit of our result is 7. 
Result so far: 397.0
If we take 693 away from 703, we end up with 10.
Include the next digit (1) from the dividend after 10, then repeat: 101 / 99

Step 6:
If we divide 101 by 99, we get 1 and a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 3971.0
Subtracting 99 from 101 leaves us 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.

Moving on to step 7:
20 divided by 99 is 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 3971.0
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.

Advancing to step 8:
99 can be fit into 200 2 times, resulting in a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 3971.02
Subtract 198 from 200 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.

Let's proceed to step 9:
20 divided by 99 is 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 3971.02
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.

Moving on to step 10:
99 can be fit into 200 2 times, resulting in a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 3971.0202
Subtract 198 from 200 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.

On to step 11:
99 goes into 20 0 times with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 3971.0202
The remainder is 20 after subtracting 0 from 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 12:
99 can be fit into 200 2 times, resulting in a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 3971.020202
Subtract 198 from 200 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.

On to step 13:
The number 99 fits into 20 0 times, leaving a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 3971.020202
If we subtract 0 from 20, we 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.

On to step 14:
200 divided by 99 is 2 with a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 3971.02020202
The remainder is 2 after subtracting 198 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

After the division, we end up with 3971.02020202 and a remainder of 2e-09.