80643615 divided by 831 
We want to figure out the number of times 80643615 can be divided by 831.

Going ahead to step 1:
8 divided by 831 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 831

Going ahead to step 2:
80 divided by 831 is 0 with a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 80 and we're left with 80.
Take the next digit (6) from the dividend and append it to 80, then repeat: 806 / 831

Going ahead to step 3:
806 divided by 831 is 0 with a remainder of 806.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 806, we end up with 806.
Fetch the next digit (4) from the dividend, attach it to 806 and continue: 8064 / 831

Moving on to step 4:
831 goes into 8064 9 times with a remainder of 585.
Write down 9 as next digit of the result. 
Result so far: 9.0
The remainder is 585 after subtracting 7479 from 8064.
Fetch the next digit (3) from the dividend, attach it to 585 and continue: 5853 / 831

Step 5:
If we divide 5853 by 831, we get 7 and a remainder of 36.
Write down 7 as next digit of the result. 
Result so far: 97.0
Subtract 5817 from 5853 to get 36.
Fetch the next digit (6) from the dividend, attach it to 36 and continue: 366 / 831

Going ahead to step 6:
831 can be fit into 366 0 times, resulting in a remainder of 366.
The number 0 becomes the next digit in our result. 
Result so far: 970.0
If we subtract 0 from 366, we get 366.
Bring next digit (1) of the dividend behind the 366 and repeat the process: 3661 / 831

Going ahead to step 7:
831 can be fit into 3661 4 times, resulting in a remainder of 337.
Write down 4 as next digit of the result. 
Result so far: 9704.0
Deduct 3324 from 3661 and we're left with 337.
Grab the next digit (5) from the dividend, add it to 337, then carry on: 3375 / 831

Let's proceed to step 8:
When dividing 3375 by 831, we get 4 with a remainder of 51.
The next digit of our result is 4. 
Result so far: 97044.0
If we subtract 3324 from 3375, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Going ahead to step 9:
831 can be fit into 510 0 times, resulting in a remainder of 510.
The next digit of our result is 0. 
Result so far: 97044.0
The remainder is 510 after subtracting 0 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Advancing to step 10:
831 can be fit into 5100 6 times, resulting in a remainder of 114.
Record the quotient 6 as the next digit in the result. 
Result so far: 97044.06
Subtracting 4986 from 5100 leaves us with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Step 11:
831 can be fit into 1140 1 times, resulting in a remainder of 309.
Write down 1 as next digit of the result. 
Result so far: 97044.061
If we take 831 away from 1140, we end up with 309.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3090, and continue the process.

On to step 12:
831 can be fit into 3090 3 times, resulting in a remainder of 597.
The number 3 becomes the next digit in our result. 
Result so far: 97044.0613
If we subtract 2493 from 3090, we get 597.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5970, and continue the process.

Going ahead to step 13:
831 can be fit into 5970 7 times, resulting in a remainder of 153.
The number 7 becomes the next digit in our result. 
Result so far: 97044.06137
Subtract 5817 from 5970 to get 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

Moving on to step 14:
831 can be fit into 1530 1 times, resulting in a remainder of 699.
The next digit of our result is 1. 
Result so far: 97044.061371
If we take 831 away from 1530, we end up with 699.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6990, and continue the process.

On to step 15:
6990 divided by 831 is 8 with a remainder of 342.
Use 8 as the next digit of our solution. 
Result so far: 97044.0613718
Deduct 6648 from 6990 and we're left with 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

Let's proceed to step 16:
3420 divided by 831 is 4 with a remainder of 96.
Put 4 as the next digit of the answer. 
Result so far: 97044.06137184
Subtracting 3324 from 3420 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Our division results in 97044.06137184 with a remaining 9.6e-08.