12539577 divided by 831 
We want to divide 12539577 by 831.

Advancing to step 1:
When dividing 1 by 831, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 831

Let's proceed to step 2:
831 can be fit into 12 0 times, resulting in a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Include the next digit (5) from the dividend after 12, then repeat: 125 / 831

Step 3:
125 divided by 831 is 0 with a remainder of 125.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 125 to get 125.
Append the next digit (3) from the dividend to 125 and continue with: 1253 / 831

On to step 4:
When dividing 1253 by 831, we get 1 with a remainder of 422.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 831 from 1253, we get 422.
Bring next digit (9) of the dividend behind the 422 and repeat the process: 4229 / 831

Advancing to step 5:
If we divide 4229 by 831, we get 5 and a remainder of 74.
Write down 5 as next digit of the result. 
Result so far: 15.0
If we subtract 4155 from 4229, we get 74.
Append the next digit (5) from the dividend to 74 and continue with: 745 / 831

Step 6:
831 can be fit into 745 0 times, resulting in a remainder of 745.
The next digit of our result is 0. 
Result so far: 150.0
Subtracting 0 from 745 leaves us with 745.
Append the next digit (7) from the dividend to 745 and continue with: 7457 / 831

Advancing to step 7:
When dividing 7457 by 831, we get 8 with a remainder of 809.
Put 8 as the next digit of the answer. 
Result so far: 1508.0
The remainder is 809 after subtracting 6648 from 7457.
Include the next digit (7) from the dividend after 809, then repeat: 8097 / 831

Going ahead to step 8:
831 goes into 8097 9 times with a remainder of 618.
Use 9 as the next digit of our solution. 
Result so far: 15089.0
If we take 7479 away from 8097, we end up with 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Advancing to step 9:
831 can be fit into 6180 7 times, resulting in a remainder of 363.
Record the quotient 7 as the next digit in the result. 
Result so far: 15089.7
Subtracting 5817 from 6180 leaves us with 363.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3630, and continue the process.

Going ahead to step 10:
If we divide 3630 by 831, we get 4 and a remainder of 306.
The next digit of our result is 4. 
Result so far: 15089.74
Subtract 3324 from 3630 to get 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

Going ahead to step 11:
The number 831 fits into 3060 3 times, leaving a remainder of 567.
Put 3 as the next digit of the answer. 
Result so far: 15089.743
If we take 2493 away from 3060, we end up with 567.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5670, and continue the process.

On to step 12:
831 goes into 5670 6 times with a remainder of 684.
Write down 6 as next digit of the result. 
Result so far: 15089.7436
Subtract 4986 from 5670 to get 684.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6840, and continue the process.

Moving on to step 13:
When dividing 6840 by 831, we get 8 with a remainder of 192.
Record the quotient 8 as the next digit in the result. 
Result so far: 15089.74368
If we take 6648 away from 6840, we end up with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Moving on to step 14:
The number 831 fits into 1920 2 times, leaving a remainder of 258.
Put 2 as the next digit of the answer. 
Result so far: 15089.743682
The remainder is 258 after subtracting 1662 from 1920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Going ahead to step 15:
The number 831 fits into 2580 3 times, leaving a remainder of 87.
The number 3 becomes the next digit in our result. 
Result so far: 15089.7436823
If we subtract 2493 from 2580, we get 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Moving on to step 16:
When dividing 870 by 831, we get 1 with a remainder of 39.
The next digit of our result is 1. 
Result so far: 15089.74368231
Subtracting 831 from 870 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

In conclusion, the division gives 15089.74368231 with a balance of 3.9e-08.