We divide 851865 by 87
We want to figure out the number of times 851865 can be divided by 87.

Moving on to step 1:
87 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (5) from the dividend, attach it to 8 and continue: 85 / 87

Let's proceed to step 2:
The number 87 fits into 85 0 times, leaving a remainder of 85.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 85 to get 85.
Bring next digit (1) of the dividend behind the 85 and repeat the process: 851 / 87

Going ahead to step 3:
851 divided by 87 is 9 with a remainder of 68.
Write down 9 as next digit of the result. 
Result so far: 9.0
Subtracting 783 from 851 leaves us with 68.
Take the next digit (8) from the dividend and append it to 68, then repeat: 688 / 87

Going ahead to step 4:
688 divided by 87 is 7 with a remainder of 79.
The next digit of our result is 7. 
Result so far: 97.0
Subtract 609 from 688 to get 79.
Append the next digit (6) from the dividend to 79 and continue with: 796 / 87

Step 5:
The number 87 fits into 796 9 times, leaving a remainder of 13.
The next digit of our result is 9. 
Result so far: 979.0
The remainder is 13 after subtracting 783 from 796.
Append the next digit (5) from the dividend to 13 and continue with: 135 / 87

Moving on to step 6:
135 divided by 87 is 1 with a remainder of 48.
Use 1 as the next digit of our solution. 
Result so far: 9791.0
Subtracting 87 from 135 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 7:
87 can be fit into 480 5 times, resulting in a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 9791.5
Deduct 435 from 480 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 8:
If we divide 450 by 87, we get 5 and a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 9791.55
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 quotient of the division is 9791.55, and the remainder is 0.015.