86806099 divided by 866 
We want to divide 86806099 by 866.

Step 1:
The number 866 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 866

Step 2:
If we divide 86 by 866, we get 0 and a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 86, we get 86.
Take the next digit (8) from the dividend and append it to 86, then repeat: 868 / 866

Moving on to step 3:
868 divided by 866 is 1 with a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 866 away from 868, we end up with 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 866

On to step 4:
If we divide 20 by 866, we get 0 and a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 10.0
Deduct 0 from 20 and we're left with 20.
Grab the next digit (6) from the dividend, add it to 20, then carry on: 206 / 866

On to step 5:
206 divided by 866 is 0 with a remainder of 206.
The next digit of our result is 0. 
Result so far: 100.0
Deduct 0 from 206 and we're left with 206.
Take the next digit (0) from the dividend and append it to 206, then repeat: 2060 / 866

On to step 6:
866 goes into 2060 2 times with a remainder of 328.
Put 2 as the next digit of the answer. 
Result so far: 1002.0
If we take 1732 away from 2060, we end up with 328.
Include the next digit (9) from the dividend after 328, then repeat: 3289 / 866

On to step 7:
The number 866 fits into 3289 3 times, leaving a remainder of 691.
Record the quotient 3 as the next digit in the result. 
Result so far: 10023.0
If we take 2598 away from 3289, we end up with 691.
Fetch the next digit (9) from the dividend, attach it to 691 and continue: 6919 / 866

Moving on to step 8:
If we divide 6919 by 866, we get 7 and a remainder of 857.
Write down 7 as next digit of the result. 
Result so far: 100237.0
Deduct 6062 from 6919 and we're left with 857.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8570, and continue the process.

Let's proceed to step 9:
866 can be fit into 8570 9 times, resulting in a remainder of 776.
The number 9 becomes the next digit in our result. 
Result so far: 100237.9
If we subtract 7794 from 8570, we get 776.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7760, and continue the process.

Advancing to step 10:
The number 866 fits into 7760 8 times, leaving a remainder of 832.
Record the quotient 8 as the next digit in the result. 
Result so far: 100237.98
If we subtract 6928 from 7760, we get 832.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8320, and continue the process.

Advancing to step 11:
8320 divided by 866 is 9 with a remainder of 526.
Write down 9 as next digit of the result. 
Result so far: 100237.989
Subtract 7794 from 8320 to get 526.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5260, and continue the process.

Going ahead to step 12:
5260 divided by 866 is 6 with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 100237.9896
Subtracting 5196 from 5260 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 13:
866 can be fit into 640 0 times, resulting in a remainder of 640.
Put 0 as the next digit of the answer. 
Result so far: 100237.9896
Subtracting 0 from 640 leaves us with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Moving on to step 14:
The number 866 fits into 6400 7 times, leaving a remainder of 338.
The next digit of our result is 7. 
Result so far: 100237.989607
Subtract 6062 from 6400 to get 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

Going ahead to step 15:
The number 866 fits into 3380 3 times, leaving a remainder of 782.
The number 3 becomes the next digit in our result. 
Result so far: 100237.9896073
Subtract 2598 from 3380 to get 782.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7820, and continue the process.

Step 16:
If we divide 7820 by 866, we get 9 and a remainder of 26.
Use 9 as the next digit of our solution. 
Result so far: 100237.98960739
If we take 7794 away from 7820, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

After the division, we end up with 100237.98960739 and a remainder of 2.6e-08.