We look at the division of 72589855 by 25 
The aim is to understand the frequency of 25 in 72589855.

Let's proceed to step 1:
25 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
If we subtract 0 from 7, we get 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 25

On to step 2:
25 goes into 72 2 times with a remainder of 22.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 50 from 72 and we're left with 22.
Append the next digit (5) from the dividend to 22 and continue with: 225 / 25

Moving on to step 3:
25 can be fit into 225 9 times, resulting in a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 29.0
Subtract 225 from 225 to get 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 25

Advancing to step 4:
If we divide 8 by 25, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 290.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 25

Advancing to step 5:
25 goes into 89 3 times with a remainder of 14.
Use 3 as the next digit of our solution. 
Result so far: 2903.0
Deduct 75 from 89 and we're left with 14.
Append the next digit (8) from the dividend to 14 and continue with: 148 / 25

Going ahead to step 6:
148 divided by 25 is 5 with a remainder of 23.
The next digit of our result is 5. 
Result so far: 29035.0
Subtract 125 from 148 to get 23.
Bring next digit (5) of the dividend behind the 23 and repeat the process: 235 / 25

Going ahead to step 7:
235 divided by 25 is 9 with a remainder of 10.
Record the quotient 9 as the next digit in the result. 
Result so far: 290359.0
If we subtract 225 from 235, we get 10.
Grab the next digit (5) from the dividend, add it to 10, then carry on: 105 / 25

On to step 8:
The number 25 fits into 105 4 times, leaving a remainder of 5.
Record the quotient 4 as the next digit in the result. 
Result so far: 2903594.0
The remainder is 5 after subtracting 100 from 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 9:
If we divide 50 by 25, we get 2 and a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 2903594.2
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.

Going ahead to step 10:
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: 2903594.2
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.

Advancing to step 11:
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: 2903594.2
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.

Our division results in 2903594.2 with a remaining 0.0.