We're dividing 399184 by 91 
Our goal is to divide 399184 by 91.

Advancing to step 1:
91 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 91

Step 2:
91 can be fit into 39 0 times, resulting in a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Include the next digit (9) from the dividend after 39, then repeat: 399 / 91

Going ahead to step 3:
91 goes into 399 4 times with a remainder of 35.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 364 from 399 and we're left with 35.
Bring next digit (1) of the dividend behind the 35 and repeat the process: 351 / 91

On to step 4:
If we divide 351 by 91, we get 3 and a remainder of 78.
Use 3 as the next digit of our solution. 
Result so far: 43.0
Subtracting 273 from 351 leaves us with 78.
Include the next digit (8) from the dividend after 78, then repeat: 788 / 91

Advancing to step 5:
When dividing 788 by 91, we get 8 with a remainder of 60.
Put 8 as the next digit of the answer. 
Result so far: 438.0
Subtracting 728 from 788 leaves us with 60.
Append the next digit (4) from the dividend to 60 and continue with: 604 / 91

Going ahead to step 6:
When dividing 604 by 91, we get 6 with a remainder of 58.
The number 6 becomes the next digit in our result. 
Result so far: 4386.0
If we subtract 546 from 604, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 7:
The number 91 fits into 580 6 times, leaving a remainder of 34.
Put 6 as the next digit of the answer. 
Result so far: 4386.6
If we take 546 away from 580, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 8:
91 can be fit into 340 3 times, resulting in a remainder of 67.
Put 3 as the next digit of the answer. 
Result so far: 4386.63
Subtracting 273 from 340 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 9:
When dividing 670 by 91, we get 7 with a remainder of 33.
Put 7 as the next digit of the answer. 
Result so far: 4386.637
Subtracting 637 from 670 leaves us with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 10:
If we divide 330 by 91, we get 3 and a remainder of 57.
Write down 3 as next digit of the result. 
Result so far: 4386.6373
Subtract 273 from 330 to get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

On to step 11:
91 can be fit into 570 6 times, resulting in a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 4386.63736
If we subtract 546 from 570, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 12:
If we divide 240 by 91, we get 2 and a remainder of 58.
The next digit of our result is 2. 
Result so far: 4386.637362
If we subtract 182 from 240, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 13:
91 can be fit into 580 6 times, resulting in a remainder of 34.
The number 6 becomes the next digit in our result. 
Result so far: 4386.6373626
Subtract 546 from 580 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 14:
340 divided by 91 is 3 with a remainder of 67.
The next digit of our result is 3. 
Result so far: 4386.63736263
Subtracting 273 from 340 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

The quotient of the division is 4386.63736263, and the remainder is 6.7e-08.