We look at the division of 855207 by 87 
We want to figure out the number of times 855207 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
If we take 0 away from 8, we end up with 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 87

Advancing to step 2:
85 divided by 87 is 0 with a remainder of 85.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 85 to get 85.
Include the next digit (5) from the dividend after 85, then repeat: 855 / 87

Going ahead to step 3:
855 divided by 87 is 9 with a remainder of 72.
The next digit of our result is 9. 
Result so far: 9.0
Subtract 783 from 855 to get 72.
Take the next digit (2) from the dividend and append it to 72, then repeat: 722 / 87

Moving on to step 4:
When dividing 722 by 87, we get 8 with a remainder of 26.
The number 8 becomes the next digit in our result. 
Result so far: 98.0
If we take 696 away from 722, we end up with 26.
Take the next digit (0) from the dividend and append it to 26, then repeat: 260 / 87

Advancing to step 5:
When dividing 260 by 87, we get 2 with a remainder of 86.
Put 2 as the next digit of the answer. 
Result so far: 982.0
Subtract 174 from 260 to get 86.
Fetch the next digit (7) from the dividend, attach it to 86 and continue: 867 / 87

On to step 6:
867 divided by 87 is 9 with a remainder of 84.
Use 9 as the next digit of our solution. 
Result so far: 9829.0
Deduct 783 from 867 and we're left 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.

Advancing to step 7:
If we divide 840 by 87, we get 9 and a remainder of 57.
Record the quotient 9 as the next digit in the result. 
Result so far: 9829.9
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.

Going ahead to step 8:
87 can be fit into 570 6 times, resulting in a remainder of 48.
Put 6 as the next digit of the answer. 
Result so far: 9829.96
If we take 522 away from 570, we end up 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.

Step 9:
480 divided by 87 is 5 with a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 9829.965
If we subtract 435 from 480, we 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.
Use 5 as the next digit of our solution. 
Result so far: 9829.9655
Subtract 435 from 450 to get 15.
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 outcome is 9829.9655, with a leftover of 0.00015.