We're dividing 587186 by 20 
The aim is to understand the frequency of 20 in 587186.

Let's proceed to step 1:
5 divided by 20 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Include the next digit (8) from the dividend after 5, then repeat: 58 / 20

Going ahead to step 2:
58 divided by 20 is 2 with a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 40 from 58 to get 18.
Bring next digit (7) of the dividend behind the 18 and repeat the process: 187 / 20

Step 3:
20 goes into 187 9 times with a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 29.0
Subtract 180 from 187 to get 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 20

On to step 4:
20 can be fit into 71 3 times, resulting in a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 293.0
If we take 60 away from 71, we end up with 11.
Take the next digit (8) from the dividend and append it to 11, then repeat: 118 / 20

Advancing to step 5:
20 goes into 118 5 times with a remainder of 18.
Use 5 as the next digit of our solution. 
Result so far: 2935.0
If we take 100 away from 118, we end up with 18.
Append the next digit (6) from the dividend to 18 and continue with: 186 / 20

Let's proceed to step 6:
When dividing 186 by 20, we get 9 with a remainder of 6.
Record the quotient 9 as the next digit in the result. 
Result so far: 29359.0
If we subtract 180 from 186, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 7:
20 goes into 60 3 times with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 29359.3
Subtract 60 from 60 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.
The number 0 becomes the next digit in our result. 
Result so far: 29359.3
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.

Going ahead to step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 29359.3
Deduct 0 from 0 and we're left 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 29359.3 with a remainder of 0.0.