Let's divide 19804638 by 25
The aim is to understand the frequency of 25 in 19804638.

Moving on to step 1:
25 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 25

Step 2:
25 can be fit into 19 0 times, resulting in a remainder of 19.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 19 leaves us with 19.
Bring next digit (8) of the dividend behind the 19 and repeat the process: 198 / 25

Going ahead to step 3:
25 can be fit into 198 7 times, resulting in a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Subtract 175 from 198 to get 23.
Take the next digit (0) from the dividend and append it to 23, then repeat: 230 / 25

On to step 4:
25 goes into 230 9 times with a remainder of 5.
Write down 9 as next digit of the result. 
Result so far: 79.0
If we subtract 225 from 230, we get 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 25

Moving on to step 5:
If we divide 54 by 25, we get 2 and a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 792.0
The remainder is 4 after subtracting 50 from 54.
Grab the next digit (6) from the dividend, add it to 4, then carry on: 46 / 25

Advancing to step 6:
When dividing 46 by 25, we get 1 with a remainder of 21.
The next digit of our result is 1. 
Result so far: 7921.0
The remainder is 21 after subtracting 25 from 46.
Include the next digit (3) from the dividend after 21, then repeat: 213 / 25

On to step 7:
25 can be fit into 213 8 times, resulting in a remainder of 13.
Write down 8 as next digit of the result. 
Result so far: 79218.0
Deduct 200 from 213 and we're left with 13.
Take the next digit (8) from the dividend and append it to 13, then repeat: 138 / 25

Moving on to step 8:
The number 25 fits into 138 5 times, leaving a remainder of 13.
The number 5 becomes the next digit in our result. 
Result so far: 792185.0
Deduct 125 from 138 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 9:
25 goes into 130 5 times with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 792185.5
If we take 125 away from 130, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 10:
25 goes into 50 2 times with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 792185.52
Subtracting 50 from 50 leaves us 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 11:
When dividing 0 by 25, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 792185.52
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.

Step 12:
If we divide 0 by 25, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 792185.52
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.

Our division results in 792185.52 with a remaining 0.0.