12829191 divided by 866 
We want to figure out the number of times 12829191 can be divided by 866.

Step 1:
If we divide 1 by 866, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 866

On to step 2:
When dividing 12 by 866, we get 0 with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Fetch the next digit (8) from the dividend, attach it to 12 and continue: 128 / 866

Moving on to step 3:
128 divided by 866 is 0 with a remainder of 128.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 128 leaves us with 128.
Grab the next digit (2) from the dividend, add it to 128, then carry on: 1282 / 866

Advancing to step 4:
The number 866 fits into 1282 1 times, leaving a remainder of 416.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 866 from 1282 to get 416.
Grab the next digit (9) from the dividend, add it to 416, then carry on: 4169 / 866

On to step 5:
866 can be fit into 4169 4 times, resulting in a remainder of 705.
Use 4 as the next digit of our solution. 
Result so far: 14.0
The remainder is 705 after subtracting 3464 from 4169.
Include the next digit (1) from the dividend after 705, then repeat: 7051 / 866

Step 6:
866 can be fit into 7051 8 times, resulting in a remainder of 123.
The next digit of our result is 8. 
Result so far: 148.0
If we subtract 6928 from 7051, we get 123.
Include the next digit (9) from the dividend after 123, then repeat: 1239 / 866

On to step 7:
If we divide 1239 by 866, we get 1 and a remainder of 373.
Use 1 as the next digit of our solution. 
Result so far: 1481.0
Subtracting 866 from 1239 leaves us with 373.
Append the next digit (1) from the dividend to 373 and continue with: 3731 / 866

On to step 8:
When dividing 3731 by 866, we get 4 with a remainder of 267.
Write down 4 as next digit of the result. 
Result so far: 14814.0
The remainder is 267 after subtracting 3464 from 3731.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Let's proceed to step 9:
If we divide 2670 by 866, we get 3 and a remainder of 72.
The next digit of our result is 3. 
Result so far: 14814.3
The remainder is 72 after subtracting 2598 from 2670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Step 10:
720 divided by 866 is 0 with a remainder of 720.
Write down 0 as next digit of the result. 
Result so far: 14814.3
If we take 0 away from 720, we end up with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

On to step 11:
When dividing 7200 by 866, we get 8 with a remainder of 272.
The number 8 becomes the next digit in our result. 
Result so far: 14814.308
Subtract 6928 from 7200 to get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

On to step 12:
The number 866 fits into 2720 3 times, leaving a remainder of 122.
Use 3 as the next digit of our solution. 
Result so far: 14814.3083
If we take 2598 away from 2720, we end up with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Let's proceed to step 13:
The number 866 fits into 1220 1 times, leaving a remainder of 354.
The number 1 becomes the next digit in our result. 
Result so far: 14814.30831
If we subtract 866 from 1220, we get 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Let's proceed to step 14:
When dividing 3540 by 866, we get 4 with a remainder of 76.
Put 4 as the next digit of the answer. 
Result so far: 14814.308314
Subtract 3464 from 3540 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 15:
866 goes into 760 0 times with a remainder of 760.
The number 0 becomes the next digit in our result. 
Result so far: 14814.308314
If we subtract 0 from 760, we get 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

On to step 16:
When dividing 7600 by 866, we get 8 with a remainder of 672.
Record the quotient 8 as the next digit in the result. 
Result so far: 14814.30831408
If we take 6928 away from 7600, we end up with 672.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6720, and continue the process.

The final result is 14814.30831408 with a remainder of 6.72e-07.