We're dividing 390923 by 2 
We're looking to find how many times 2 goes into 390923.

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
Subtract 2 from 3 to get 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 2

On to step 2:
19 divided by 2 is 9 with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
Subtracting 18 from 19 leaves us with 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 2

Advancing to step 3:
10 divided by 2 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 195.0
Subtract 10 from 10 to get 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 2

Let's proceed to step 4:
When dividing 9 by 2, we get 4 with a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 1954.0
If we take 8 away from 9, we end up with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 2

Moving on to step 5:
2 can be fit into 12 6 times, resulting in a remainder of 0.
The next digit of our result is 6. 
Result so far: 19546.0
If we subtract 12 from 12, we get 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 2

Advancing to step 6:
2 goes into 3 1 times with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 195461.0
Deduct 2 from 3 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 7:
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: 195461.5
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.

On 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: 195461.5
Subtract 0 from 0 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.

On to step 9:
2 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 195461.5
Subtract 0 from 0 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.

The final outcome is 195461.5, with a leftover of 0.0.