We're dividing 803944 by 20 
The aim is to understand the frequency of 20 in 803944.

Let's proceed to step 1:
When dividing 8 by 20, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 20

Advancing to step 2:
If we divide 80 by 20, we get 4 and a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 80 away from 80, we end up with 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 20

On to step 3:
3 divided by 20 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 40.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 20

Advancing to step 4:
The number 20 fits into 39 1 times, leaving a remainder of 19.
The next digit of our result is 1. 
Result so far: 401.0
If we subtract 20 from 39, we get 19.
Fetch the next digit (4) from the dividend, attach it to 19 and continue: 194 / 20

Moving on to step 5:
194 divided by 20 is 9 with a remainder of 14.
Use 9 as the next digit of our solution. 
Result so far: 4019.0
The remainder is 14 after subtracting 180 from 194.
Include the next digit (4) from the dividend after 14, then repeat: 144 / 20

On to step 6:
20 goes into 144 7 times with a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 40197.0
If we take 140 away from 144, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 7:
20 can be fit into 40 2 times, resulting in a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 40197.2
Subtract 40 from 40 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.

Advancing to step 8:
If we divide 0 by 20, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 40197.2
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.

Moving on to step 9:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 40197.2
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.

Our division results in 40197.2 with a remaining 0.0.