40491319 ÷ 91 
Let's see how many times 91 fits into 40491319.

Moving on to step 1:
When dividing 4 by 91, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 91

Step 2:
40 divided by 91 is 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 40 to get 40.
Take the next digit (4) from the dividend and append it to 40, then repeat: 404 / 91

Step 3:
91 can be fit into 404 4 times, resulting in a remainder of 40.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 364 from 404 to get 40.
Bring next digit (9) of the dividend behind the 40 and repeat the process: 409 / 91

Step 4:
409 divided by 91 is 4 with a remainder of 45.
Put 4 as the next digit of the answer. 
Result so far: 44.0
Subtract 364 from 409 to get 45.
Bring next digit (1) of the dividend behind the 45 and repeat the process: 451 / 91

Advancing to step 5:
91 goes into 451 4 times with a remainder of 87.
Write down 4 as next digit of the result. 
Result so far: 444.0
If we subtract 364 from 451, we get 87.
Fetch the next digit (3) from the dividend, attach it to 87 and continue: 873 / 91

Moving on to step 6:
The number 91 fits into 873 9 times, leaving a remainder of 54.
Use 9 as the next digit of our solution. 
Result so far: 4449.0
The remainder is 54 after subtracting 819 from 873.
Take the next digit (1) from the dividend and append it to 54, then repeat: 541 / 91

Step 7:
If we divide 541 by 91, we get 5 and a remainder of 86.
The number 5 becomes the next digit in our result. 
Result so far: 44495.0
If we take 455 away from 541, we end up with 86.
Grab the next digit (9) from the dividend, add it to 86, then carry on: 869 / 91

Let's proceed to step 8:
When dividing 869 by 91, we get 9 with a remainder of 50.
Put 9 as the next digit of the answer. 
Result so far: 444959.0
Subtract 819 from 869 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 9:
When dividing 500 by 91, we get 5 with a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 444959.5
Deduct 455 from 500 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Going ahead to step 10:
91 goes into 450 4 times with a remainder of 86.
Write down 4 as next digit of the result. 
Result so far: 444959.54
Subtracting 364 from 450 leaves us with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Going ahead to step 11:
The number 91 fits into 860 9 times, leaving a remainder of 41.
Put 9 as the next digit of the answer. 
Result so far: 444959.549
If we subtract 819 from 860, we get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Moving on to step 12:
91 goes into 410 4 times with a remainder of 46.
The number 4 becomes the next digit in our result. 
Result so far: 444959.5494
Subtract 364 from 410 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 13:
91 can be fit into 460 5 times, resulting in a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 444959.54945
Subtracting 455 from 460 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 14:
50 divided by 91 is 0 with a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 444959.54945
Subtracting 0 from 50 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 15:
If we divide 500 by 91, we get 5 and a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 444959.5494505
Subtract 455 from 500 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 16:
If we divide 450 by 91, we get 4 and a remainder of 86.
The next digit of our result is 4. 
Result so far: 444959.54945054
Subtract 364 from 450 to get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

In conclusion, the division gives 444959.54945054 with a balance of 8.6e-08.