We look at the division of 163059 by 25 
The aim is to understand the frequency of 25 in 163059.

Let's proceed to step 1:
1 divided by 25 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 25

Step 2:
If we divide 16 by 25, we get 0 and a remainder of 16.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Bring next digit (3) of the dividend behind the 16 and repeat the process: 163 / 25

On to step 3:
When dividing 163 by 25, we get 6 with a remainder of 13.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtract 150 from 163 to get 13.
Append the next digit (0) from the dividend to 13 and continue with: 130 / 25

Step 4:
If we divide 130 by 25, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 65.0
Deduct 125 from 130 and we're left with 5.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 25

On to step 5:
The number 25 fits into 55 2 times, leaving a remainder of 5.
Put 2 as the next digit of the answer. 
Result so far: 652.0
Subtracting 50 from 55 leaves us with 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 25

Advancing to step 6:
If we divide 59 by 25, we get 2 and a remainder of 9.
Record the quotient 2 as the next digit in the result. 
Result so far: 6522.0
Subtracting 50 from 59 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 7:
The number 25 fits into 90 3 times, leaving a remainder of 15.
The next digit of our result is 3. 
Result so far: 6522.3
Subtracting 75 from 90 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 8:
The number 25 fits into 150 6 times, leaving a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 6522.36
Subtracting 150 from 150 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.

Step 9:
25 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 6522.36
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.

Going ahead to step 10:
0 divided by 25 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 6522.36
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 final result is 6522.36 with a remainder of 0.0.