We're dividing 868170 by 87 
We want to divide 868170 by 87.

Advancing to step 1:
87 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 87

Going ahead to step 2:
87 goes into 86 0 times with a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Fetch the next digit (8) from the dividend, attach it to 86 and continue: 868 / 87

Moving on to step 3:
87 goes into 868 9 times with a remainder of 85.
The next digit of our result is 9. 
Result so far: 9.0
The remainder is 85 after subtracting 783 from 868.
Take the next digit (1) from the dividend and append it to 85, then repeat: 851 / 87

Going ahead to step 4:
The number 87 fits into 851 9 times, leaving a remainder of 68.
Use 9 as the next digit of our solution. 
Result so far: 99.0
If we take 783 away from 851, we end up with 68.
Append the next digit (7) from the dividend to 68 and continue with: 687 / 87

On to step 5:
687 divided by 87 is 7 with a remainder of 78.
The next digit of our result is 7. 
Result so far: 997.0
Subtracting 609 from 687 leaves us with 78.
Take the next digit (0) from the dividend and append it to 78, then repeat: 780 / 87

Moving on to step 6:
87 goes into 780 8 times with a remainder of 84.
The next digit of our result is 8. 
Result so far: 9978.0
If we take 696 away from 780, we end up with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 7:
If we divide 840 by 87, we get 9 and a remainder of 57.
Put 9 as the next digit of the answer. 
Result so far: 9978.9
Subtract 783 from 840 to get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Moving on to step 8:
If we divide 570 by 87, we get 6 and a remainder of 48.
The number 6 becomes the next digit in our result. 
Result so far: 9978.96
Subtracting 522 from 570 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 9:
87 goes into 480 5 times with a remainder of 45.
The next digit of our result is 5. 
Result so far: 9978.965
Subtract 435 from 480 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 10:
450 divided by 87 is 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 9978.9655
The remainder is 15 after subtracting 435 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The final result is 9978.9655 with a remainder of 0.00015.