866503 divided by 87 
We want to figure out the number of times 866503 can be divided by 87.

Advancing to step 1:
87 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 87

Let's proceed to step 2:
If we divide 86 by 87, we get 0 and a remainder of 86.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Append the next digit (6) from the dividend to 86 and continue with: 866 / 87

Moving on to step 3:
The number 87 fits into 866 9 times, leaving a remainder of 83.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Deduct 783 from 866 and we're left with 83.
Fetch the next digit (5) from the dividend, attach it to 83 and continue: 835 / 87

Advancing to step 4:
835 divided by 87 is 9 with a remainder of 52.
Record the quotient 9 as the next digit in the result. 
Result so far: 99.0
Deduct 783 from 835 and we're left with 52.
Bring next digit (0) of the dividend behind the 52 and repeat the process: 520 / 87

Let's proceed to step 5:
When dividing 520 by 87, we get 5 with a remainder of 85.
Record the quotient 5 as the next digit in the result. 
Result so far: 995.0
If we subtract 435 from 520, we get 85.
Fetch the next digit (3) from the dividend, attach it to 85 and continue: 853 / 87

Let's proceed to step 6:
87 can be fit into 853 9 times, resulting in a remainder of 70.
Put 9 as the next digit of the answer. 
Result so far: 9959.0
Deduct 783 from 853 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 7:
87 can be fit into 700 8 times, resulting in a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 9959.8
If we take 696 away from 700, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 8:
When dividing 40 by 87, we get 0 with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 9959.8
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 9:
The number 87 fits into 400 4 times, leaving a remainder of 52.
Record the quotient 4 as the next digit in the result. 
Result so far: 9959.804
If we take 348 away from 400, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 10:
87 can be fit into 520 5 times, resulting in a remainder of 85.
Record the quotient 5 as the next digit in the result. 
Result so far: 9959.8045
The remainder is 85 after subtracting 435 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Advancing to step 11:
850 divided by 87 is 9 with a remainder of 67.
The next digit of our result is 9. 
Result so far: 9959.80459
Deduct 783 from 850 and we're left with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Moving on to step 12:
87 goes into 670 7 times with a remainder of 61.
The next digit of our result is 7. 
Result so far: 9959.804597
If we subtract 609 from 670, we get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 13:
The number 87 fits into 610 7 times, leaving a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 9959.8045977
The remainder is 1 after subtracting 609 from 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

In conclusion, the division gives 9959.8045977 with a balance of 1e-08.