We're dividing 815871 by 6 
We're looking to find how many times 6 goes into 815871.

Let's proceed to step 1:
6 goes into 8 1 times with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 6 from 8, we get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 6

Going ahead to step 2:
21 divided by 6 is 3 with a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 13.0
If we take 18 away from 21, we end up with 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 6

Step 3:
6 can be fit into 35 5 times, resulting in a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 135.0
Subtracting 30 from 35 leaves us with 5.
Take the next digit (8) from the dividend and append it to 5, then repeat: 58 / 6

Going ahead to step 4:
If we divide 58 by 6, we get 9 and a remainder of 4.
The number 9 becomes the next digit in our result. 
Result so far: 1359.0
If we take 54 away from 58, we end up with 4.
Include the next digit (7) from the dividend after 4, then repeat: 47 / 6

Moving on to step 5:
If we divide 47 by 6, we get 7 and a remainder of 5.
Put 7 as the next digit of the answer. 
Result so far: 13597.0
Deduct 42 from 47 and we're left with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 6

Let's proceed to step 6:
The number 6 fits into 51 8 times, leaving a remainder of 3.
Record the quotient 8 as the next digit in the result. 
Result so far: 135978.0
If we subtract 48 from 51, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
6 can be fit into 30 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 135978.5
If we take 30 away from 30, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
The number 6 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 135978.5
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
6 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 135978.5
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 135978.5 with a remaining 0.0.