We're dividing 812871 by 2 
Let's see how many times 2 fits into 812871.

Advancing to step 1:
If we divide 8 by 2, we get 4 and a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 8 from 8 leaves us with 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 2

Moving on to step 2:
2 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 40.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 2

Let's proceed to step 3:
The number 2 fits into 12 6 times, leaving a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 406.0
Subtract 12 from 12 to get 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 2

Moving on to step 4:
2 goes into 8 4 times with a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 4064.0
If we take 8 away from 8, we end up with 0.
Fetch the next digit (7) from the dividend, attach it to 0 and continue: 7 / 2

Advancing to step 5:
When dividing 7 by 2, we get 3 with a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 40643.0
The remainder is 1 after subtracting 6 from 7.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 2

Let's proceed to step 6:
If we divide 11 by 2, we get 5 and a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 406435.0
Subtract 10 from 11 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
When dividing 10 by 2, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 406435.5
Subtract 10 from 10 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
The number 2 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 406435.5
The remainder is 0 after subtracting 0 from 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 9:
If we divide 0 by 2, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 406435.5
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.

The final result is 406435.5 with a remainder of 0.0.