We look at the division of 541173 by 25 
The aim is to understand the frequency of 25 in 541173.

Advancing to step 1:
When dividing 5 by 25, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 25

Advancing to step 2:
When dividing 54 by 25, we get 2 with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 4 after subtracting 50 from 54.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 25

Step 3:
When dividing 41 by 25, we get 1 with a remainder of 16.
The next digit of our result is 1. 
Result so far: 21.0
Deduct 25 from 41 and we're left with 16.
Append the next digit (1) from the dividend to 16 and continue with: 161 / 25

On to step 4:
25 can be fit into 161 6 times, resulting in a remainder of 11.
Record the quotient 6 as the next digit in the result. 
Result so far: 216.0
Subtract 150 from 161 to get 11.
Fetch the next digit (7) from the dividend, attach it to 11 and continue: 117 / 25

Let's proceed to step 5:
If we divide 117 by 25, we get 4 and a remainder of 17.
Write down 4 as next digit of the result. 
Result so far: 2164.0
If we take 100 away from 117, we end up with 17.
Include the next digit (3) from the dividend after 17, then repeat: 173 / 25

On to step 6:
The number 25 fits into 173 6 times, leaving a remainder of 23.
The next digit of our result is 6. 
Result so far: 21646.0
Subtracting 150 from 173 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 7:
25 goes into 230 9 times with a remainder of 5.
Put 9 as the next digit of the answer. 
Result so far: 21646.9
If we take 225 away from 230, 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.

Moving on to step 8:
If we divide 50 by 25, we get 2 and a remainder of 0.
The next digit of our result is 2. 
Result so far: 21646.92
The remainder is 0 after subtracting 50 from 50.
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 9:
The number 25 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 21646.92
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.

On to step 10:
25 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 21646.92
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.

The quotient of the division is 21646.92, and the remainder is 0.0.