We're dividing 165380 by 20 
The aim is to understand the frequency of 20 in 165380.

On to step 1:
20 goes into 1 0 times with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 20

Step 2:
When dividing 16 by 20, we get 0 with a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 16 and we're left with 16.
Include the next digit (5) from the dividend after 16, then repeat: 165 / 20

Going ahead to step 3:
20 goes into 165 8 times with a remainder of 5.
The next digit of our result is 8. 
Result so far: 8.0
If we take 160 away from 165, we end up with 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 20

Let's proceed to step 4:
20 can be fit into 53 2 times, resulting in a remainder of 13.
Record the quotient 2 as the next digit in the result. 
Result so far: 82.0
If we take 40 away from 53, we end up with 13.
Take the next digit (8) from the dividend and append it to 13, then repeat: 138 / 20

Step 5:
20 can be fit into 138 6 times, resulting in a remainder of 18.
Record the quotient 6 as the next digit in the result. 
Result so far: 826.0
Deduct 120 from 138 and we're left with 18.
Fetch the next digit (0) from the dividend, attach it to 18 and continue: 180 / 20

Let's proceed to step 6:
20 can be fit into 180 9 times, resulting in a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 8269.0
If we subtract 180 from 180, 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.

Moving on to step 7:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 8269.0
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 8:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 8269.0
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.

The final result is 8269.0 with a remainder of 0.0.