We look at the division of 397933 by 91 
Our goal is to divide 397933 by 91.

Going ahead to step 1:
When dividing 3 by 91, we get 0 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.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 91

Going ahead to step 2:
The number 91 fits into 39 0 times, leaving a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Fetch the next digit (7) from the dividend, attach it to 39 and continue: 397 / 91

Advancing to step 3:
If we divide 397 by 91, we get 4 and a remainder of 33.
Put 4 as the next digit of the answer. 
Result so far: 4.0
The remainder is 33 after subtracting 364 from 397.
Include the next digit (9) from the dividend after 33, then repeat: 339 / 91

Moving on to step 4:
91 can be fit into 339 3 times, resulting in a remainder of 66.
Write down 3 as next digit of the result. 
Result so far: 43.0
The remainder is 66 after subtracting 273 from 339.
Fetch the next digit (3) from the dividend, attach it to 66 and continue: 663 / 91

Step 5:
If we divide 663 by 91, we get 7 and a remainder of 26.
The number 7 becomes the next digit in our result. 
Result so far: 437.0
Subtracting 637 from 663 leaves us with 26.
Bring next digit (3) of the dividend behind the 26 and repeat the process: 263 / 91

On to step 6:
91 can be fit into 263 2 times, resulting in a remainder of 81.
Use 2 as the next digit of our solution. 
Result so far: 4372.0
Subtracting 182 from 263 leaves us with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Advancing to step 7:
The number 91 fits into 810 8 times, leaving a remainder of 82.
Record the quotient 8 as the next digit in the result. 
Result so far: 4372.8
Deduct 728 from 810 and we're left with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Let's proceed to step 8:
91 can be fit into 820 9 times, resulting in a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 4372.89
Subtracting 819 from 820 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 9:
91 goes into 10 0 times with a remainder of 10.
The next digit of our result is 0. 
Result so far: 4372.89
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 10:
The number 91 fits into 100 1 times, leaving a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 4372.8901
If we subtract 91 from 100, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 11:
The number 91 fits into 90 0 times, leaving a remainder of 90.
The next digit of our result is 0. 
Result so far: 4372.8901
If we subtract 0 from 90, we get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

On to step 12:
91 goes into 900 9 times with a remainder of 81.
Record the quotient 9 as the next digit in the result. 
Result so far: 4372.890109
Subtract 819 from 900 to get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

On to step 13:
810 divided by 91 is 8 with a remainder of 82.
The number 8 becomes the next digit in our result. 
Result so far: 4372.8901098
If we take 728 away from 810, we end up with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Moving on to step 14:
91 goes into 820 9 times with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 4372.89010989
Subtracting 819 from 820 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

After the division, we end up with 4372.89010989 and a remainder of 1e-09.