We're dividing 340623 by 18 
We want to divide 340623 by 18.

Advancing to step 1:
The number 18 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Bring next digit (4) of the dividend behind the 3 and repeat the process: 34 / 18

Going ahead to step 2:
If we divide 34 by 18, we get 1 and a remainder of 16.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 18 from 34 leaves us with 16.
Fetch the next digit (0) from the dividend, attach it to 16 and continue: 160 / 18

Let's proceed to step 3:
18 goes into 160 8 times with a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 18.0
If we subtract 144 from 160, we get 16.
Take the next digit (6) from the dividend and append it to 16, then repeat: 166 / 18

Step 4:
166 divided by 18 is 9 with a remainder of 4.
The number 9 becomes the next digit in our result. 
Result so far: 189.0
If we subtract 162 from 166, we get 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 18

Advancing to step 5:
18 can be fit into 42 2 times, resulting in a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 1892.0
If we take 36 away from 42, we end up with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 18

Moving on to step 6:
18 goes into 63 3 times with a remainder of 9.
The next digit of our result is 3. 
Result so far: 18923.0
If we take 54 away from 63, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
18 goes into 90 5 times with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 18923.5
If we subtract 90 from 90, 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.

Advancing to step 8:
18 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 18923.5
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.

Going ahead to step 9:
0 divided by 18 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 18923.5
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.

In conclusion, the division gives 18923.5 with a balance of 0.0.