170015 ÷ 20 
The aim is to understand the frequency of 20 in 170015.

Advancing to step 1:
1 divided by 20 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 20

On to step 2:
20 can be fit into 17 0 times, resulting in a remainder of 17.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Take the next digit (0) from the dividend and append it to 17, then repeat: 170 / 20

Advancing to step 3:
The number 20 fits into 170 8 times, leaving a remainder of 10.
Write down 8 as next digit of the result. 
Result so far: 8.0
The remainder is 10 after subtracting 160 from 170.
Include the next digit (0) from the dividend after 10, then repeat: 100 / 20

Moving on to step 4:
When dividing 100 by 20, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 85.0
Subtract 100 from 100 to get 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 20

Let's proceed to step 5:
1 divided by 20 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 850.0
Subtract 0 from 1 to get 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 20

Advancing to step 6:
15 divided by 20 is 0 with a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 8500.0
If we subtract 0 from 15, 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.

Let's proceed to step 7:
If we divide 150 by 20, we get 7 and a remainder of 10.
Use 7 as the next digit of our solution. 
Result so far: 8500.7
Subtract 140 from 150 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
When dividing 100 by 20, we get 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 8500.75
Subtracting 100 from 100 leaves us 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.

Let's proceed to step 9:
0 divided by 20 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 8500.75
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.

On to step 10:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 8500.75
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.

The final result is 8500.75 with a remainder of 0.0.