43930234 ÷ 866 
We want to figure out the number of times 43930234 can be divided by 866.

Step 1:
866 can be fit into 4 0 times, resulting in a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 866

On to step 2:
If we divide 43 by 866, we get 0 and a remainder of 43.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 43 after subtracting 0 from 43.
Append the next digit (9) from the dividend to 43 and continue with: 439 / 866

On to step 3:
866 can be fit into 439 0 times, resulting in a remainder of 439.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 439 leaves us with 439.
Append the next digit (3) from the dividend to 439 and continue with: 4393 / 866

Let's proceed to step 4:
When dividing 4393 by 866, we get 5 with a remainder of 63.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Deduct 4330 from 4393 and we're left with 63.
Bring next digit (0) of the dividend behind the 63 and repeat the process: 630 / 866

Let's proceed to step 5:
866 can be fit into 630 0 times, resulting in a remainder of 630.
Write down 0 as next digit of the result. 
Result so far: 50.0
Deduct 0 from 630 and we're left with 630.
Grab the next digit (2) from the dividend, add it to 630, then carry on: 6302 / 866

Let's proceed to step 6:
866 goes into 6302 7 times with a remainder of 240.
Use 7 as the next digit of our solution. 
Result so far: 507.0
If we take 6062 away from 6302, we end up with 240.
Take the next digit (3) from the dividend and append it to 240, then repeat: 2403 / 866

Going ahead to step 7:
866 goes into 2403 2 times with a remainder of 671.
Use 2 as the next digit of our solution. 
Result so far: 5072.0
If we subtract 1732 from 2403, we get 671.
Include the next digit (4) from the dividend after 671, then repeat: 6714 / 866

Advancing to step 8:
6714 divided by 866 is 7 with a remainder of 652.
Write down 7 as next digit of the result. 
Result so far: 50727.0
If we subtract 6062 from 6714, we get 652.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6520, and continue the process.

Step 9:
The number 866 fits into 6520 7 times, leaving a remainder of 458.
Use 7 as the next digit of our solution. 
Result so far: 50727.7
The remainder is 458 after subtracting 6062 from 6520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

On to step 10:
866 goes into 4580 5 times with a remainder of 250.
Use 5 as the next digit of our solution. 
Result so far: 50727.75
Subtracting 4330 from 4580 leaves us with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Step 11:
866 goes into 2500 2 times with a remainder of 768.
The next digit of our result is 2. 
Result so far: 50727.752
Deduct 1732 from 2500 and we're left with 768.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7680, and continue the process.

On to step 12:
The number 866 fits into 7680 8 times, leaving a remainder of 752.
Record the quotient 8 as the next digit in the result. 
Result so far: 50727.7528
If we subtract 6928 from 7680, we get 752.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7520, and continue the process.

Going ahead to step 13:
866 can be fit into 7520 8 times, resulting in a remainder of 592.
The next digit of our result is 8. 
Result so far: 50727.75288
Subtracting 6928 from 7520 leaves us with 592.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5920, and continue the process.

The final result is 50727.75288 with a remainder of 0.000592.