We look at the division of 86736280 by 831 
We're looking to find how many times 831 goes into 86736280.

Advancing to step 1:
The number 831 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 831

Step 2:
The number 831 fits into 86 0 times, leaving a remainder of 86.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 86 and we're left with 86.
Fetch the next digit (7) from the dividend, attach it to 86 and continue: 867 / 831

Moving on to step 3:
831 can be fit into 867 1 times, resulting in a remainder of 36.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 831 from 867 and we're left with 36.
Grab the next digit (3) from the dividend, add it to 36, then carry on: 363 / 831

Moving on to step 4:
The number 831 fits into 363 0 times, leaving a remainder of 363.
Use 0 as the next digit of our solution. 
Result so far: 10.0
The remainder is 363 after subtracting 0 from 363.
Take the next digit (6) from the dividend and append it to 363, then repeat: 3636 / 831

Advancing to step 5:
831 can be fit into 3636 4 times, resulting in a remainder of 312.
Write down 4 as next digit of the result. 
Result so far: 104.0
If we take 3324 away from 3636, we end up with 312.
Grab the next digit (2) from the dividend, add it to 312, then carry on: 3122 / 831

Moving on to step 6:
When dividing 3122 by 831, we get 3 with a remainder of 629.
The next digit of our result is 3. 
Result so far: 1043.0
Subtracting 2493 from 3122 leaves us with 629.
Grab the next digit (8) from the dividend, add it to 629, then carry on: 6298 / 831

Let's proceed to step 7:
831 can be fit into 6298 7 times, resulting in a remainder of 481.
The number 7 becomes the next digit in our result. 
Result so far: 10437.0
Deduct 5817 from 6298 and we're left with 481.
Take the next digit (0) from the dividend and append it to 481, then repeat: 4810 / 831

Step 8:
831 can be fit into 4810 5 times, resulting in a remainder of 655.
The number 5 becomes the next digit in our result. 
Result so far: 104375.0
Deduct 4155 from 4810 and we're left with 655.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6550, and continue the process.

Moving on to step 9:
831 can be fit into 6550 7 times, resulting in a remainder of 733.
Record the quotient 7 as the next digit in the result. 
Result so far: 104375.7
Subtracting 5817 from 6550 leaves us with 733.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7330, and continue the process.

Going ahead to step 10:
831 goes into 7330 8 times with a remainder of 682.
The next digit of our result is 8. 
Result so far: 104375.78
If we take 6648 away from 7330, we end up with 682.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6820, and continue the process.

Going ahead to step 11:
831 can be fit into 6820 8 times, resulting in a remainder of 172.
Write down 8 as next digit of the result. 
Result so far: 104375.788
If we subtract 6648 from 6820, we get 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

Our division results in 104375.788 with a remaining 0.0172.