We're dividing 4091535 by 345 
We're looking to find how many times 345 goes into 4091535.

On to step 1:
345 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 345

Let's proceed to step 2:
When dividing 40 by 345, we get 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.
Include the next digit (9) from the dividend after 40, then repeat: 409 / 345

Advancing to step 3:
If we divide 409 by 345, we get 1 and a remainder of 64.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 345 from 409 and we're left with 64.
Take the next digit (1) from the dividend and append it to 64, then repeat: 641 / 345

Moving on to step 4:
When dividing 641 by 345, we get 1 with a remainder of 296.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Subtract 345 from 641 to get 296.
Include the next digit (5) from the dividend after 296, then repeat: 2965 / 345

Let's proceed to step 5:
When dividing 2965 by 345, we get 8 with a remainder of 205.
The next digit of our result is 8. 
Result so far: 118.0
Subtract 2760 from 2965 to get 205.
Take the next digit (3) from the dividend and append it to 205, then repeat: 2053 / 345

Going ahead to step 6:
345 can be fit into 2053 5 times, resulting in a remainder of 328.
Put 5 as the next digit of the answer. 
Result so far: 1185.0
If we subtract 1725 from 2053, we get 328.
Bring next digit (5) of the dividend behind the 328 and repeat the process: 3285 / 345

Step 7:
The number 345 fits into 3285 9 times, leaving a remainder of 180.
Record the quotient 9 as the next digit in the result. 
Result so far: 11859.0
Deduct 3105 from 3285 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Advancing to step 8:
If we divide 1800 by 345, we get 5 and a remainder of 75.
Record the quotient 5 as the next digit in the result. 
Result so far: 11859.5
Subtract 1725 from 1800 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 9:
345 can be fit into 750 2 times, resulting in a remainder of 60.
Use 2 as the next digit of our solution. 
Result so far: 11859.52
Subtracting 690 from 750 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 10:
The number 345 fits into 600 1 times, leaving a remainder of 255.
The number 1 becomes the next digit in our result. 
Result so far: 11859.521
If we subtract 345 from 600, we get 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Step 11:
2550 divided by 345 is 7 with a remainder of 135.
Record the quotient 7 as the next digit in the result. 
Result so far: 11859.5217
Subtract 2415 from 2550 to get 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Moving on to step 12:
The number 345 fits into 1350 3 times, leaving a remainder of 315.
Use 3 as the next digit of our solution. 
Result so far: 11859.52173
The remainder is 315 after subtracting 1035 from 1350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Let's proceed to step 13:
345 goes into 3150 9 times with a remainder of 45.
The number 9 becomes the next digit in our result. 
Result so far: 11859.521739
The remainder is 45 after subtracting 3105 from 3150.
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 14:
345 can be fit into 450 1 times, resulting in a remainder of 105.
Put 1 as the next digit of the answer. 
Result so far: 11859.5217391
If we subtract 345 from 450, 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.

Advancing to step 15:
When dividing 1050 by 345, we get 3 with a remainder of 15.
The number 3 becomes the next digit in our result. 
Result so far: 11859.52173913
If we take 1035 away from 1050, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

After the division, we end up with 11859.52173913 and a remainder of 1.5e-08.