We look at the division of 43719089 by 391 
We want to figure out the number of times 43719089 can be divided by 391.

On to step 1:
391 can be fit into 4 0 times, resulting in a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 391

On to step 2:
43 divided by 391 is 0 with a remainder of 43.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 43 leaves us with 43.
Fetch the next digit (7) from the dividend, attach it to 43 and continue: 437 / 391

Advancing to step 3:
If we divide 437 by 391, we get 1 and a remainder of 46.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 391 from 437 leaves us with 46.
Append the next digit (1) from the dividend to 46 and continue with: 461 / 391

Moving on to step 4:
391 goes into 461 1 times with a remainder of 70.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Subtract 391 from 461 to get 70.
Include the next digit (9) from the dividend after 70, then repeat: 709 / 391

Advancing to step 5:
If we divide 709 by 391, we get 1 and a remainder of 318.
Write down 1 as next digit of the result. 
Result so far: 111.0
If we subtract 391 from 709, we get 318.
Include the next digit (0) from the dividend after 318, then repeat: 3180 / 391

Going ahead to step 6:
391 goes into 3180 8 times with a remainder of 52.
Use 8 as the next digit of our solution. 
Result so far: 1118.0
If we take 3128 away from 3180, we end up with 52.
Include the next digit (8) from the dividend after 52, then repeat: 528 / 391

Going ahead to step 7:
391 can be fit into 528 1 times, resulting in a remainder of 137.
The next digit of our result is 1. 
Result so far: 11181.0
Subtracting 391 from 528 leaves us with 137.
Bring next digit (9) of the dividend behind the 137 and repeat the process: 1379 / 391

Step 8:
When dividing 1379 by 391, we get 3 with a remainder of 206.
The number 3 becomes the next digit in our result. 
Result so far: 111813.0
Subtracting 1173 from 1379 leaves us with 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

On to step 9:
The number 391 fits into 2060 5 times, leaving a remainder of 105.
Use 5 as the next digit of our solution. 
Result so far: 111813.5
If we subtract 1955 from 2060, we get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Moving on to step 10:
391 goes into 1050 2 times with a remainder of 268.
The next digit of our result is 2. 
Result so far: 111813.52
Subtract 782 from 1050 to get 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Let's proceed to step 11:
If we divide 2680 by 391, we get 6 and a remainder of 334.
Use 6 as the next digit of our solution. 
Result so far: 111813.526
Deduct 2346 from 2680 and we're left with 334.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3340, and continue the process.

Moving on to step 12:
3340 divided by 391 is 8 with a remainder of 212.
Write down 8 as next digit of the result. 
Result so far: 111813.5268
Subtracting 3128 from 3340 leaves us with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

On to step 13:
2120 divided by 391 is 5 with a remainder of 165.
Put 5 as the next digit of the answer. 
Result so far: 111813.52685
If we take 1955 away from 2120, we end up with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Moving on to step 14:
The number 391 fits into 1650 4 times, leaving a remainder of 86.
Record the quotient 4 as the next digit in the result. 
Result so far: 111813.526854
If we take 1564 away from 1650, we end up 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.

Let's proceed to step 15:
391 goes into 860 2 times with a remainder of 78.
Put 2 as the next digit of the answer. 
Result so far: 111813.5268542
Subtracting 782 from 860 leaves us with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Step 16:
391 goes into 780 1 times with a remainder of 389.
The number 1 becomes the next digit in our result. 
Result so far: 111813.52685421
Subtract 391 from 780 to get 389.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3890, and continue the process.

Our division results in 111813.52685421 with a remaining 3.89e-07.