We look at the division of 57124512 by 866 
We're looking to find how many times 866 goes into 57124512.

Advancing to step 1:
When dividing 5 by 866, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 866

Moving on to step 2:
866 goes into 57 0 times with a remainder of 57.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 57 to get 57.
Bring next digit (1) of the dividend behind the 57 and repeat the process: 571 / 866

Moving on to step 3:
The number 866 fits into 571 0 times, leaving a remainder of 571.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 571 to get 571.
Append the next digit (2) from the dividend to 571 and continue with: 5712 / 866

Moving on to step 4:
866 goes into 5712 6 times with a remainder of 516.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we take 5196 away from 5712, we end up with 516.
Bring next digit (4) of the dividend behind the 516 and repeat the process: 5164 / 866

Moving on to step 5:
If we divide 5164 by 866, we get 5 and a remainder of 834.
The next digit of our result is 5. 
Result so far: 65.0
The remainder is 834 after subtracting 4330 from 5164.
Append the next digit (5) from the dividend to 834 and continue with: 8345 / 866

Moving on to step 6:
866 goes into 8345 9 times with a remainder of 551.
The next digit of our result is 9. 
Result so far: 659.0
Subtracting 7794 from 8345 leaves us with 551.
Append the next digit (1) from the dividend to 551 and continue with: 5511 / 866

Let's proceed to step 7:
5511 divided by 866 is 6 with a remainder of 315.
Put 6 as the next digit of the answer. 
Result so far: 6596.0
Subtracting 5196 from 5511 leaves us with 315.
Append the next digit (2) from the dividend to 315 and continue with: 3152 / 866

On to step 8:
The number 866 fits into 3152 3 times, leaving a remainder of 554.
Record the quotient 3 as the next digit in the result. 
Result so far: 65963.0
If we subtract 2598 from 3152, we get 554.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5540, and continue the process.

Step 9:
When dividing 5540 by 866, we get 6 with a remainder of 344.
Use 6 as the next digit of our solution. 
Result so far: 65963.6
The remainder is 344 after subtracting 5196 from 5540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Going ahead to step 10:
The number 866 fits into 3440 3 times, leaving a remainder of 842.
The number 3 becomes the next digit in our result. 
Result so far: 65963.63
Deduct 2598 from 3440 and we're left with 842.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8420, and continue the process.

Moving on to step 11:
866 goes into 8420 9 times with a remainder of 626.
The next digit of our result is 9. 
Result so far: 65963.639
Subtract 7794 from 8420 to get 626.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6260, and continue the process.

Let's proceed to step 12:
When dividing 6260 by 866, we get 7 with a remainder of 198.
The next digit of our result is 7. 
Result so far: 65963.6397
If we take 6062 away from 6260, we end up with 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Going ahead to step 13:
866 can be fit into 1980 2 times, resulting in a remainder of 248.
Write down 2 as next digit of the result. 
Result so far: 65963.63972
If we take 1732 away from 1980, we end up with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Let's proceed to step 14:
If we divide 2480 by 866, we get 2 and a remainder of 748.
Record the quotient 2 as the next digit in the result. 
Result so far: 65963.639722
The remainder is 748 after subtracting 1732 from 2480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7480, and continue the process.

In conclusion, the division gives 65963.639722 with a balance of 7.48e-05.