437175 divided by 25 
The aim is to understand the frequency of 25 in 437175.

On to 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
Deduct 0 from 4 and we're left with 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 25

Going ahead to step 2:
If we divide 43 by 25, we get 1 and a remainder of 18.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 25 from 43 leaves us with 18.
Append the next digit (7) from the dividend to 18 and continue with: 187 / 25

Moving on to step 3:
If we divide 187 by 25, we get 7 and a remainder of 12.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
Deduct 175 from 187 and we're left with 12.
Append the next digit (1) from the dividend to 12 and continue with: 121 / 25

Advancing to step 4:
25 can be fit into 121 4 times, resulting in a remainder of 21.
The number 4 becomes the next digit in our result. 
Result so far: 174.0
Deduct 100 from 121 and we're left with 21.
Fetch the next digit (7) from the dividend, attach it to 21 and continue: 217 / 25

On to step 5:
If we divide 217 by 25, we get 8 and a remainder of 17.
The number 8 becomes the next digit in our result. 
Result so far: 1748.0
Deduct 200 from 217 and we're left with 17.
Fetch the next digit (5) from the dividend, attach it to 17 and continue: 175 / 25

Moving on to step 6:
If we divide 175 by 25, we get 7 and a remainder of 0.
The next digit of our result is 7. 
Result so far: 17487.0
If we take 175 away from 175, 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.

Going ahead to step 7:
0 divided by 25 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 17487.0
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.

Advancing to step 8:
25 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 17487.0
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.

The final result is 17487.0 with a remainder of 0.0.