We're dividing 506090 by 25 
The aim is to understand the frequency of 25 in 506090.

Advancing to step 1:
If we divide 5 by 25, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Take the next digit (0) from the dividend and append it to 5, then repeat: 50 / 25

On to step 2:
When dividing 50 by 25, we get 2 with a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 50 from 50, we get 0.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 25

Let's proceed to step 3:
6 divided by 25 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 20.0
Subtract 0 from 6 to get 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 25

Advancing to step 4:
The number 25 fits into 60 2 times, leaving a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 202.0
If we take 50 away from 60, we end up with 10.
Fetch the next digit (9) from the dividend, attach it to 10 and continue: 109 / 25

Moving on to step 5:
25 can be fit into 109 4 times, resulting in a remainder of 9.
Record the quotient 4 as the next digit in the result. 
Result so far: 2024.0
Subtracting 100 from 109 leaves us with 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 25

Step 6:
The number 25 fits into 90 3 times, leaving a remainder of 15.
The next digit of our result is 3. 
Result so far: 20243.0
If we subtract 75 from 90, 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.

Moving on to step 7:
The number 25 fits into 150 6 times, leaving a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 20243.6
If we take 150 away from 150, 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.

Moving on to step 8:
25 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 20243.6
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.

On to step 9:
If we divide 0 by 25, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 20243.6
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.

In conclusion, the division gives 20243.6 with a balance of 0.0.