Let's divide 431320 by 25
The aim is to understand the frequency of 25 in 431320.

Step 1:
25 goes into 4 0 times with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 25

Step 2:
43 divided by 25 is 1 with a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 18 after subtracting 25 from 43.
Append the next digit (1) from the dividend to 18 and continue with: 181 / 25

Step 3:
The number 25 fits into 181 7 times, leaving a remainder of 6.
Use 7 as the next digit of our solution. 
Result so far: 17.0
The remainder is 6 after subtracting 175 from 181.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 25

Step 4:
The number 25 fits into 63 2 times, leaving a remainder of 13.
The number 2 becomes the next digit in our result. 
Result so far: 172.0
Subtract 50 from 63 to get 13.
Take the next digit (2) from the dividend and append it to 13, then repeat: 132 / 25

Going ahead to step 5:
132 divided by 25 is 5 with a remainder of 7.
Record the quotient 5 as the next digit in the result. 
Result so far: 1725.0
If we subtract 125 from 132, we get 7.
Fetch the next digit (0) from the dividend, attach it to 7 and continue: 70 / 25

On to step 6:
25 goes into 70 2 times with a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 17252.0
The remainder is 20 after subtracting 50 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 7:
25 goes into 200 8 times with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 17252.8
Subtracting 200 from 200 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.

Advancing to step 8:
25 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 17252.8
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.

Moving on to step 9:
25 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 17252.8
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 17252.8 with a remainder of 0.0.