183990 ÷ 2 
We want to divide 183990 by 2.

Step 1:
If we divide 1 by 2, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 2

Step 2:
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: 9.0
If we subtract 18 from 18, we get 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 2

Let's proceed to step 3:
2 goes into 3 1 times with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 91.0
Subtract 2 from 3 to get 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 2

Moving on to step 4:
19 divided by 2 is 9 with a remainder of 1.
The next digit of our result is 9. 
Result so far: 919.0
If we take 18 away from 19, we end up with 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 2

Advancing to step 5:
The number 2 fits into 19 9 times, leaving a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 9199.0
Subtract 18 from 19 to get 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 2

Advancing to step 6:
2 can be fit into 10 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 91995.0
Subtracting 10 from 10 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.

On to step 7:
2 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 91995.0
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.

Moving on to step 8:
The number 2 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 91995.0
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.

The final outcome is 91995.0, with a leftover of 0.0.