503693 divided by 20 
The aim is to understand the frequency of 20 in 503693.

Step 1:
20 can be fit into 5 0 times, resulting in a remainder of 5.
Record the quotient 0 as the next digit in 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

Going ahead to step 2:
50 divided by 20 is 2 with a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 40 away from 50, we end up with 10.
Take the next digit (3) from the dividend and append it to 10, then repeat: 103 / 20

Moving on to step 3:
20 goes into 103 5 times with a remainder of 3.
Write down 5 as next digit of the result. 
Result so far: 25.0
Deduct 100 from 103 and we're left with 3.
Bring next digit (6) of the dividend behind the 3 and repeat the process: 36 / 20

On to step 4:
20 goes into 36 1 times with a remainder of 16.
Use 1 as the next digit of our solution. 
Result so far: 251.0
If we take 20 away from 36, we end up with 16.
Include the next digit (9) from the dividend after 16, then repeat: 169 / 20

Let's proceed to step 5:
20 can be fit into 169 8 times, resulting in a remainder of 9.
The next digit of our result is 8. 
Result so far: 2518.0
Subtracting 160 from 169 leaves us with 9.
Fetch the next digit (3) from the dividend, attach it to 9 and continue: 93 / 20

Let's proceed to step 6:
When dividing 93 by 20, we get 4 with a remainder of 13.
Record the quotient 4 as the next digit in the result. 
Result so far: 25184.0
If we subtract 80 from 93, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 7:
When dividing 130 by 20, we get 6 with a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 25184.6
The remainder is 10 after subtracting 120 from 130.
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:
If we divide 100 by 20, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 25184.65
Subtract 100 from 100 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 9:
0 divided by 20 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 25184.65
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.

Step 10:
20 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 25184.65
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.

Our division results in 25184.65 with a remaining 0.0.