726459 ÷ 20 
The aim is to understand the frequency of 20 in 726459.

Step 1:
20 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 20

Going ahead to step 2:
20 can be fit into 72 3 times, resulting in a remainder of 12.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 60 from 72 to get 12.
Include the next digit (6) from the dividend after 12, then repeat: 126 / 20

Moving on to step 3:
The number 20 fits into 126 6 times, leaving a remainder of 6.
The next digit of our result is 6. 
Result so far: 36.0
The remainder is 6 after subtracting 120 from 126.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 20

Let's proceed to step 4:
If we divide 64 by 20, we get 3 and a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 363.0
Subtract 60 from 64 to get 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 20

Moving on to step 5:
If we divide 45 by 20, we get 2 and a remainder of 5.
Use 2 as the next digit of our solution. 
Result so far: 3632.0
Deduct 40 from 45 and we're left with 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 20

Let's proceed to step 6:
The number 20 fits into 59 2 times, leaving a remainder of 19.
The next digit of our result is 2. 
Result so far: 36322.0
The remainder is 19 after subtracting 40 from 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 7:
20 goes into 190 9 times with a remainder of 10.
Write down 9 as next digit of the result. 
Result so far: 36322.9
Subtract 180 from 190 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.

Advancing to step 8:
If we divide 100 by 20, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 36322.95
If we take 100 away from 100, 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.

Let's proceed to step 9:
0 divided by 20 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 36322.95
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.

Going ahead to step 10:
0 divided by 20 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 36322.95
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.

The final outcome is 36322.95, with a leftover of 0.0.