Let's divide 87857101 by 831
We're looking to find how many times 831 goes into 87857101.

On to step 1:
831 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 831

Going ahead to step 2:
The number 831 fits into 87 0 times, leaving a remainder of 87.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 87, we get 87.
Bring next digit (8) of the dividend behind the 87 and repeat the process: 878 / 831

On to step 3:
831 can be fit into 878 1 times, resulting in a remainder of 47.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 831 from 878 to get 47.
Grab the next digit (5) from the dividend, add it to 47, then carry on: 475 / 831

Let's proceed to step 4:
When dividing 475 by 831, we get 0 with a remainder of 475.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtracting 0 from 475 leaves us with 475.
Append the next digit (7) from the dividend to 475 and continue with: 4757 / 831

Going ahead to step 5:
831 goes into 4757 5 times with a remainder of 602.
The number 5 becomes the next digit in our result. 
Result so far: 105.0
If we subtract 4155 from 4757, we get 602.
Take the next digit (1) from the dividend and append it to 602, then repeat: 6021 / 831

On to step 6:
6021 divided by 831 is 7 with a remainder of 204.
The number 7 becomes the next digit in our result. 
Result so far: 1057.0
If we take 5817 away from 6021, we end up with 204.
Append the next digit (0) from the dividend to 204 and continue with: 2040 / 831

On to step 7:
The number 831 fits into 2040 2 times, leaving a remainder of 378.
Use 2 as the next digit of our solution. 
Result so far: 10572.0
Deduct 1662 from 2040 and we're left with 378.
Include the next digit (1) from the dividend after 378, then repeat: 3781 / 831

Let's proceed to step 8:
831 goes into 3781 4 times with a remainder of 457.
Put 4 as the next digit of the answer. 
Result so far: 105724.0
If we take 3324 away from 3781, we end up with 457.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4570, and continue the process.

Moving on to step 9:
831 can be fit into 4570 5 times, resulting in a remainder of 415.
The next digit of our result is 5. 
Result so far: 105724.5
If we subtract 4155 from 4570, we get 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

On to step 10:
When dividing 4150 by 831, we get 4 with a remainder of 826.
Write down 4 as next digit of the result. 
Result so far: 105724.54
If we take 3324 away from 4150, we end up with 826.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8260, and continue the process.

Let's proceed to step 11:
831 can be fit into 8260 9 times, resulting in a remainder of 781.
The number 9 becomes the next digit in our result. 
Result so far: 105724.549
Deduct 7479 from 8260 and we're left with 781.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7810, and continue the process.

Step 12:
When dividing 7810 by 831, we get 9 with a remainder of 331.
Put 9 as the next digit of the answer. 
Result so far: 105724.5499
Subtract 7479 from 7810 to get 331.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3310, and continue the process.

In conclusion, the division gives 105724.5499 with a balance of 0.00331.