528853 divided by 25 
The aim is to understand the frequency of 25 in 528853.

Moving on to step 1:
When dividing 5 by 25, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 25

Step 2:
25 can be fit into 52 2 times, resulting in a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 50 from 52 and we're left with 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 25

Moving on to step 3:
25 can be fit into 28 1 times, resulting in a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
Subtracting 25 from 28 leaves us with 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 25

Going ahead to step 4:
25 can be fit into 38 1 times, resulting in a remainder of 13.
The next digit of our result is 1. 
Result so far: 211.0
If we subtract 25 from 38, we get 13.
Grab the next digit (5) from the dividend, add it to 13, then carry on: 135 / 25

Moving on to step 5:
135 divided by 25 is 5 with a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 2115.0
If we take 125 away from 135, we end up with 10.
Fetch the next digit (3) from the dividend, attach it to 10 and continue: 103 / 25

On to step 6:
103 divided by 25 is 4 with a remainder of 3.
The number 4 becomes the next digit in our result. 
Result so far: 21154.0
If we take 100 away from 103, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 7:
When dividing 30 by 25, we get 1 with a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 21154.1
Subtracting 25 from 30 leaves us 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.

Going ahead to step 8:
If we divide 50 by 25, we get 2 and a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 21154.12
Deduct 50 from 50 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 9:
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: 21154.12
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.

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: 21154.12
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 21154.12 with a remaining 0.0.