We look at the division of 452419 by 25 
The aim is to understand the frequency of 25 in 452419.

Step 1:
4 divided by 25 is 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 25

Moving on to step 2:
When dividing 45 by 25, we get 1 with a remainder of 20.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 20 after subtracting 25 from 45.
Grab the next digit (2) from the dividend, add it to 20, then carry on: 202 / 25

Going ahead to step 3:
If we divide 202 by 25, we get 8 and a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 18.0
The remainder is 2 after subtracting 200 from 202.
Grab the next digit (4) from the dividend, add it to 2, then carry on: 24 / 25

On to step 4:
24 divided by 25 is 0 with a remainder of 24.
The next digit of our result is 0. 
Result so far: 180.0
Subtracting 0 from 24 leaves us with 24.
Include the next digit (1) from the dividend after 24, then repeat: 241 / 25

Moving on to step 5:
25 can be fit into 241 9 times, resulting in a remainder of 16.
Put 9 as the next digit of the answer. 
Result so far: 1809.0
Subtract 225 from 241 to get 16.
Take the next digit (9) from the dividend and append it to 16, then repeat: 169 / 25

On to step 6:
If we divide 169 by 25, we get 6 and a remainder of 19.
The number 6 becomes the next digit in our result. 
Result so far: 18096.0
Deduct 150 from 169 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.

Let's proceed to step 7:
The number 25 fits into 190 7 times, leaving a remainder of 15.
The number 7 becomes the next digit in our result. 
Result so far: 18096.7
If we subtract 175 from 190, 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.

Step 8:
If we divide 150 by 25, we get 6 and a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 18096.76
If we subtract 150 from 150, 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 9:
0 divided by 25 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 18096.76
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.

Moving on to step 10:
The number 25 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 18096.76
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.

The final result is 18096.76 with a remainder of 0.0.