We look at the division of 439438 by 91 
We're looking to find how many times 91 goes into 439438.

Advancing to step 1:
4 divided by 91 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 91

Let's proceed to step 2:
When dividing 43 by 91, we get 0 with a remainder of 43.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 43, we end up with 43.
Append the next digit (9) from the dividend to 43 and continue with: 439 / 91

Moving on to step 3:
91 goes into 439 4 times with a remainder of 75.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 364 from 439 to get 75.
Fetch the next digit (4) from the dividend, attach it to 75 and continue: 754 / 91

Advancing to step 4:
If we divide 754 by 91, we get 8 and a remainder of 26.
The next digit of our result is 8. 
Result so far: 48.0
Deduct 728 from 754 and we're left with 26.
Bring next digit (3) of the dividend behind the 26 and repeat the process: 263 / 91

Moving on to step 5:
91 goes into 263 2 times with a remainder of 81.
The next digit of our result is 2. 
Result so far: 482.0
The remainder is 81 after subtracting 182 from 263.
Grab the next digit (8) from the dividend, add it to 81, then carry on: 818 / 91

Going ahead to step 6:
91 goes into 818 8 times with a remainder of 90.
Use 8 as the next digit of our solution. 
Result so far: 4828.0
If we subtract 728 from 818, 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.

Going ahead to step 7:
900 divided by 91 is 9 with a remainder of 81.
The next digit of our result is 9. 
Result so far: 4828.9
The remainder is 81 after subtracting 819 from 900.
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 8:
If we divide 810 by 91, we get 8 and a remainder of 82.
Put 8 as the next digit of the answer. 
Result so far: 4828.98
Subtract 728 from 810 to get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Advancing to step 9:
91 can be fit into 820 9 times, resulting in a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 4828.989
Subtract 819 from 820 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 10:
If we divide 10 by 91, we get 0 and a remainder of 10.
The next digit of our result is 0. 
Result so far: 4828.989
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 11:
91 goes into 100 1 times with a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 4828.98901
The remainder is 9 after subtracting 91 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 12:
91 goes into 90 0 times with a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 4828.98901
Subtracting 0 from 90 leaves us with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Advancing to step 13:
900 divided by 91 is 9 with a remainder of 81.
Put 9 as the next digit of the answer. 
Result so far: 4828.9890109
Subtracting 819 from 900 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.

On to step 14:
When dividing 810 by 91, we get 8 with a remainder of 82.
Write down 8 as next digit of the result. 
Result so far: 4828.98901098
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.

The quotient of the division is 4828.98901098, and the remainder is 8.2e-08.