309830 ÷ 2 
We want to divide 309830 by 2.

Moving on to step 1:
If we divide 3 by 2, we get 1 and a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 1 after subtracting 2 from 3.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 2

On to step 2:
2 can be fit into 10 5 times, resulting in a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we take 10 away from 10, we end up with 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 2

Moving on to step 3:
When dividing 9 by 2, we get 4 with a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 154.0
Subtract 8 from 9 to get 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 2

Let's proceed to step 4:
The number 2 fits into 18 9 times, leaving a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 1549.0
If we take 18 away from 18, we end up with 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 2

Going ahead to step 5:
If we divide 3 by 2, we get 1 and a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 15491.0
If we take 2 away from 3, we end up with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 2

Let's proceed to step 6:
If we divide 10 by 2, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 154915.0
The remainder is 0 after subtracting 10 from 10.
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 7:
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: 154915.0
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.

On to step 8:
When dividing 0 by 2, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 154915.0
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.

After the division, we end up with 154915.0 and a remainder of 0.0.