69813143 divided by 866 
We want to figure out the number of times 69813143 can be divided by 866.

Going ahead to step 1:
The number 866 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (9) of the dividend behind the 6 and repeat the process: 69 / 866

On to step 2:
69 divided by 866 is 0 with a remainder of 69.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 69 to get 69.
Take the next digit (8) from the dividend and append it to 69, then repeat: 698 / 866

Advancing to step 3:
698 divided by 866 is 0 with a remainder of 698.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 698 to get 698.
Grab the next digit (1) from the dividend, add it to 698, then carry on: 6981 / 866

Going ahead to step 4:
866 can be fit into 6981 8 times, resulting in a remainder of 53.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtract 6928 from 6981 to get 53.
Fetch the next digit (3) from the dividend, attach it to 53 and continue: 533 / 866

Going ahead to step 5:
866 can be fit into 533 0 times, resulting in a remainder of 533.
Put 0 as the next digit of the answer. 
Result so far: 80.0
If we take 0 away from 533, we end up with 533.
Grab the next digit (1) from the dividend, add it to 533, then carry on: 5331 / 866

On to step 6:
5331 divided by 866 is 6 with a remainder of 135.
The number 6 becomes the next digit in our result. 
Result so far: 806.0
Deduct 5196 from 5331 and we're left with 135.
Fetch the next digit (4) from the dividend, attach it to 135 and continue: 1354 / 866

Step 7:
866 goes into 1354 1 times with a remainder of 488.
The number 1 becomes the next digit in our result. 
Result so far: 8061.0
Subtract 866 from 1354 to get 488.
Fetch the next digit (3) from the dividend, attach it to 488 and continue: 4883 / 866

Advancing to step 8:
When dividing 4883 by 866, we get 5 with a remainder of 553.
Write down 5 as next digit of the result. 
Result so far: 80615.0
The remainder is 553 after subtracting 4330 from 4883.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5530, and continue the process.

On to step 9:
5530 divided by 866 is 6 with a remainder of 334.
Write down 6 as next digit of the result. 
Result so far: 80615.6
If we subtract 5196 from 5530, we get 334.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3340, and continue the process.

Let's proceed to step 10:
When dividing 3340 by 866, we get 3 with a remainder of 742.
Use 3 as the next digit of our solution. 
Result so far: 80615.63
If we take 2598 away from 3340, we end up with 742.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7420, and continue the process.

Going ahead to step 11:
866 can be fit into 7420 8 times, resulting in a remainder of 492.
Use 8 as the next digit of our solution. 
Result so far: 80615.638
If we take 6928 away from 7420, we end up with 492.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4920, and continue the process.

Step 12:
4920 divided by 866 is 5 with a remainder of 590.
The number 5 becomes the next digit in our result. 
Result so far: 80615.6385
Subtract 4330 from 4920 to get 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Moving on to step 13:
The number 866 fits into 5900 6 times, leaving a remainder of 704.
Record the quotient 6 as the next digit in the result. 
Result so far: 80615.63856
Subtracting 5196 from 5900 leaves us with 704.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7040, and continue the process.

Moving on to step 14:
866 can be fit into 7040 8 times, resulting in a remainder of 112.
Record the quotient 8 as the next digit in the result. 
Result so far: 80615.638568
Subtracting 6928 from 7040 leaves us with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

On to step 15:
1120 divided by 866 is 1 with a remainder of 254.
Put 1 as the next digit of the answer. 
Result so far: 80615.6385681
Subtracting 866 from 1120 leaves us with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Moving on to step 16:
2540 divided by 866 is 2 with a remainder of 808.
Put 2 as the next digit of the answer. 
Result so far: 80615.63856812
If we take 1732 away from 2540, we end up with 808.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8080, and continue the process.

In conclusion, the division gives 80615.63856812 with a balance of 8.08e-07.