We're dividing 500395 by 20 
The aim is to understand the frequency of 20 in 500395.

Let's proceed to step 1:
20 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 20

On to step 2:
20 can be fit into 50 2 times, resulting in a remainder of 10.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 40 from 50 and we're left with 10.
Include the next digit (0) from the dividend after 10, then repeat: 100 / 20

Advancing to step 3:
When dividing 100 by 20, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 25.0
Subtract 100 from 100 to get 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 20

On to step 4:
When dividing 3 by 20, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 250.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 20

On to step 5:
39 divided by 20 is 1 with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 2501.0
The remainder is 19 after subtracting 20 from 39.
Include the next digit (5) from the dividend after 19, then repeat: 195 / 20

On to step 6:
The number 20 fits into 195 9 times, leaving a remainder of 15.
The next digit of our result is 9. 
Result so far: 25019.0
If we subtract 180 from 195, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 7:
150 divided by 20 is 7 with a remainder of 10.
Put 7 as the next digit of the answer. 
Result so far: 25019.7
Deduct 140 from 150 and we're left 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.

On to step 8:
100 divided by 20 is 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 25019.75
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.

Advancing to step 9:
20 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 25019.75
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.

Moving on to step 10:
20 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 25019.75
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 25019.75 with a remaining 0.0.