We look at the division of 810312 by 19 
Let's see how many times 19 fits into 810312.

Step 1:
19 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
Subtract 0 from 8 to get 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 19

Advancing to step 2:
19 can be fit into 81 4 times, resulting in a remainder of 5.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 76 from 81 leaves us with 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 19

Let's proceed to step 3:
50 divided by 19 is 2 with a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 42.0
The remainder is 12 after subtracting 38 from 50.
Bring next digit (3) of the dividend behind the 12 and repeat the process: 123 / 19

Let's proceed to step 4:
123 divided by 19 is 6 with a remainder of 9.
Record the quotient 6 as the next digit in the result. 
Result so far: 426.0
If we subtract 114 from 123, we get 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 19

On to step 5:
19 goes into 91 4 times with a remainder of 15.
Write down 4 as next digit of the result. 
Result so far: 4264.0
Subtracting 76 from 91 leaves us with 15.
Bring next digit (2) of the dividend behind the 15 and repeat the process: 152 / 19

Step 6:
19 can be fit into 152 8 times, resulting in a remainder of 0.
The next digit of our result is 8. 
Result so far: 42648.0
Deduct 152 from 152 and we're left 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.

Going ahead to step 7:
0 divided by 19 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 42648.0
Deduct 0 from 0 and we're left 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:
0 divided by 19 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 42648.0
If we subtract 0 from 0, we 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.

Our division results in 42648.0 with a remaining 0.0.