We look at the division of 315819 by 2 
We're looking to find how many times 2 goes into 315819.

Let's proceed to step 1:
2 goes into 3 1 times with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 2 from 3 to get 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 2

Let's proceed to step 2:
2 goes into 11 5 times with a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
The remainder is 1 after subtracting 10 from 11.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 2

Moving on to step 3:
When dividing 15 by 2, we get 7 with a remainder of 1.
The next digit of our result is 7. 
Result so far: 157.0
Deduct 14 from 15 and we're left with 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 2

Moving on to step 4:
2 can be fit into 18 9 times, resulting in a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 1579.0
Subtracting 18 from 18 leaves us with 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 2

On to step 5:
1 divided by 2 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 15790.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 2

On to step 6:
2 goes into 19 9 times with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 157909.0
The remainder is 1 after subtracting 18 from 19.
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.
Record the quotient 5 as the next digit in the result. 
Result so far: 157909.5
Deduct 10 from 10 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 8:
0 divided by 2 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 157909.5
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.

Advancing to step 9:
When dividing 0 by 2, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 157909.5
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.

The final outcome is 157909.5, with a leftover of 0.0.