We look at the division of 505008 by 20 
Let's see how many times 20 fits into 505008.

Moving on to step 1:
20 can be fit into 5 0 times, resulting in a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 20

Going ahead to step 2:
50 divided by 20 is 2 with a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 40 from 50 to get 10.
Grab the next digit (5) from the dividend, add it to 10, then carry on: 105 / 20

Advancing to step 3:
20 goes into 105 5 times with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 25.0
If we take 100 away from 105, we end up with 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 20

On to step 4:
The number 20 fits into 50 2 times, leaving a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 252.0
If we subtract 40 from 50, we get 10.
Fetch the next digit (0) from the dividend, attach it to 10 and continue: 100 / 20

Advancing to step 5:
When dividing 100 by 20, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 2525.0
Subtracting 100 from 100 leaves us with 0.
Take the next digit (8) from the dividend and append it to 0, then repeat: 8 / 20

Let's proceed to step 6:
20 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 25250.0
Subtract 0 from 8 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 7:
80 divided by 20 is 4 with a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 25250.4
The remainder is 0 after subtracting 80 from 80.
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:
20 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 25250.4
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:
When dividing 0 by 20, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 25250.4
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.

The final outcome is 25250.4, with a leftover of 0.0.