54590256 ÷ 25 
The aim is to understand the frequency of 25 in 54590256.

Moving on to step 1:
25 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 25

Advancing to step 2:
If we divide 54 by 25, we get 2 and a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 4 after subtracting 50 from 54.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 25

Step 3:
25 goes into 45 1 times with a remainder of 20.
Write down 1 as next digit of the result. 
Result so far: 21.0
If we subtract 25 from 45, we get 20.
Append the next digit (9) from the dividend to 20 and continue with: 209 / 25

On to step 4:
The number 25 fits into 209 8 times, leaving a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 218.0
If we take 200 away from 209, we end up with 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 25

Let's proceed to step 5:
25 can be fit into 90 3 times, resulting in a remainder of 15.
The number 3 becomes the next digit in our result. 
Result so far: 2183.0
If we subtract 75 from 90, we get 15.
Take the next digit (2) from the dividend and append it to 15, then repeat: 152 / 25

On to step 6:
When dividing 152 by 25, we get 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 21836.0
If we take 150 away from 152, we end up with 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 25

Going ahead to step 7:
The number 25 fits into 25 1 times, leaving a remainder of 0.
The next digit of our result is 1. 
Result so far: 218361.0
If we take 25 away from 25, we end up with 0.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 25

Going ahead to step 8:
The number 25 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 2183610.0
If we take 0 away from 6, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 9:
If we divide 60 by 25, we get 2 and a remainder of 10.
Record the quotient 2 as the next digit in the result. 
Result so far: 2183610.2
Subtracting 50 from 60 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 10:
100 divided by 25 is 4 with a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 2183610.24
Deduct 100 from 100 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.

Let's proceed to step 11:
When dividing 0 by 25, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 2183610.24
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.

Step 12:
25 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 2183610.24
If we take 0 away from 0, 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.

The final result is 2183610.24 with a remainder of 0.0.