304405 ÷ 20 
We want to divide 304405 by 20.

Step 1:
If we divide 3 by 20, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 20

Let's proceed to step 2:
20 goes into 30 1 times with a remainder of 10.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 20 from 30 and we're left with 10.
Fetch the next digit (4) from the dividend, attach it to 10 and continue: 104 / 20

Going ahead to step 3:
20 can be fit into 104 5 times, resulting in a remainder of 4.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Subtract 100 from 104 to get 4.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 20

Moving on to step 4:
20 can be fit into 44 2 times, resulting in a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 152.0
The remainder is 4 after subtracting 40 from 44.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 20

Moving on to step 5:
20 can be fit into 40 2 times, resulting in a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 1522.0
If we take 40 away from 40, we end up with 0.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 20

Let's proceed to step 6:
When dividing 5 by 20, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 15220.0
Subtracting 0 from 5 leaves us 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.

Going ahead to step 7:
The number 20 fits into 50 2 times, leaving a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 15220.2
Subtract 40 from 50 to get 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:
If we divide 100 by 20, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 15220.25
The remainder is 0 after subtracting 100 from 100.
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:
0 divided by 20 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 15220.25
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.

Let's proceed to step 10:
20 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 15220.25
Subtracting 0 from 0 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.

After the division, we end up with 15220.25 and a remainder of 0.0.