We're dividing 239805 by 20 
We want to divide 239805 by 20.

On to step 1:
20 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 20

Let's proceed to step 2:
The number 20 fits into 23 1 times, leaving a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 20 from 23, we get 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 20

On to step 3:
The number 20 fits into 39 1 times, leaving a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtract 20 from 39 to get 19.
Grab the next digit (8) from the dividend, add it to 19, then carry on: 198 / 20

Advancing to step 4:
20 goes into 198 9 times with a remainder of 18.
Put 9 as the next digit of the answer. 
Result so far: 119.0
Deduct 180 from 198 and we're left with 18.
Fetch the next digit (0) from the dividend, attach it to 18 and continue: 180 / 20

On to step 5:
180 divided by 20 is 9 with a remainder of 0.
Record the quotient 9 as the next digit in the result. 
Result so far: 1199.0
Subtracting 180 from 180 leaves us with 0.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 20

Going ahead to step 6:
When dividing 5 by 20, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 11990.0
Deduct 0 from 5 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 7:
When dividing 50 by 20, we get 2 with a remainder of 10.
Record the quotient 2 as the next digit in the result. 
Result so far: 11990.2
If we take 40 away from 50, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 11990.25
If we subtract 100 from 100, 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 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 11990.25
If we take 0 away from 0, we end up 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 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 11990.25
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.

In conclusion, the division gives 11990.25 with a balance of 0.0.