Let's divide 861813 by 87
We want to divide 861813 by 87.

Moving on to step 1:
When dividing 8 by 87, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 87

Going ahead to step 2:
If we divide 86 by 87, we get 0 and a remainder of 86.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Fetch the next digit (1) from the dividend, attach it to 86 and continue: 861 / 87

Step 3:
When dividing 861 by 87, we get 9 with a remainder of 78.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtract 783 from 861 to get 78.
Take the next digit (8) from the dividend and append it to 78, then repeat: 788 / 87

Let's proceed to step 4:
87 goes into 788 9 times with a remainder of 5.
The next digit of our result is 9. 
Result so far: 99.0
If we take 783 away from 788, we end up with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 87

Moving on to step 5:
87 can be fit into 51 0 times, resulting in a remainder of 51.
Put 0 as the next digit of the answer. 
Result so far: 990.0
Deduct 0 from 51 and we're left with 51.
Include the next digit (3) from the dividend after 51, then repeat: 513 / 87

Moving on to step 6:
87 can be fit into 513 5 times, resulting in a remainder of 78.
Record the quotient 5 as the next digit in the result. 
Result so far: 9905.0
If we take 435 away from 513, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Step 7:
87 goes into 780 8 times with a remainder of 84.
Use 8 as the next digit of our solution. 
Result so far: 9905.8
Deduct 696 from 780 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.

Step 8:
The number 87 fits into 840 9 times, leaving a remainder of 57.
Use 9 as the next digit of our solution. 
Result so far: 9905.89
Deduct 783 from 840 and we're left with 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 9:
The number 87 fits into 570 6 times, leaving a remainder of 48.
The next digit of our result is 6. 
Result so far: 9905.896
The remainder is 48 after subtracting 522 from 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 10:
87 goes into 480 5 times with a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 9905.8965
If we take 435 away from 480, we end up 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.

Let's proceed to step 11:
The number 87 fits into 450 5 times, leaving a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 9905.89655
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.

Our division results in 9905.89655 with a remaining 1.5e-05.