We're dividing 561259 by 20 
The aim is to understand the frequency of 20 in 561259.

Going ahead to step 1:
When dividing 5 by 20, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (6) from the dividend after 5, then repeat: 56 / 20

Let's proceed to step 2:
If we divide 56 by 20, we get 2 and a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 40 away from 56, we end up with 16.
Take the next digit (1) from the dividend and append it to 16, then repeat: 161 / 20

On to step 3:
20 can be fit into 161 8 times, resulting in a remainder of 1.
Record the quotient 8 as the next digit in the result. 
Result so far: 28.0
The remainder is 1 after subtracting 160 from 161.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 20

Step 4:
When dividing 12 by 20, we get 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 280.0
Subtract 0 from 12 to get 12.
Append the next digit (5) from the dividend to 12 and continue with: 125 / 20

Let's proceed to step 5:
20 goes into 125 6 times with a remainder of 5.
Write down 6 as next digit of the result. 
Result so far: 2806.0
Subtract 120 from 125 to get 5.
Fetch the next digit (9) from the dividend, attach it to 5 and continue: 59 / 20

Moving on to step 6:
The number 20 fits into 59 2 times, leaving a remainder of 19.
Use 2 as the next digit of our solution. 
Result so far: 28062.0
Deduct 40 from 59 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 7:
20 can be fit into 190 9 times, resulting in a remainder of 10.
Write down 9 as next digit of the result. 
Result so far: 28062.9
The remainder is 10 after subtracting 180 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
20 goes into 100 5 times with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 28062.95
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.

Step 9:
When dividing 0 by 20, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 28062.95
If we subtract 0 from 0, 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.

Step 10:
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: 28062.95
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 28062.95 with a remainder of 0.0.