We look at the division of 304581 by 20 
We want to figure out the number of times 304581 can be divided by 20.

Step 1:
When dividing 3 by 20, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 20

Let's proceed to step 2:
20 goes into 30 1 times with a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 20 from 30 leaves us with 10.
Grab the next digit (4) from the dividend, add it to 10, then carry on: 104 / 20

Moving on to step 3:
If we divide 104 by 20, we get 5 and a remainder of 4.
Use 5 as the next digit of our solution. 
Result so far: 15.0
The remainder is 4 after subtracting 100 from 104.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 20

On to step 4:
20 goes into 45 2 times with a remainder of 5.
Record the quotient 2 as the next digit in the result. 
Result so far: 152.0
If we subtract 40 from 45, we get 5.
Bring next digit (8) of the dividend behind the 5 and repeat the process: 58 / 20

Step 5:
20 goes into 58 2 times with a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 1522.0
If we take 40 away from 58, we end up with 18.
Take the next digit (1) from the dividend and append it to 18, then repeat: 181 / 20

On to step 6:
181 divided by 20 is 9 with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 15229.0
Deduct 180 from 181 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.

Step 7:
When dividing 10 by 20, we get 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 15229.0
If we subtract 0 from 10, we 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: 15229.05
Subtracting 100 from 100 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.

Step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 15229.05
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:
0 divided by 20 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 15229.05
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.

After the division, we end up with 15229.05 and a remainder of 0.0.