We're dividing 436807 by 25 
The aim is to understand the frequency of 25 in 436807.

Going ahead to step 1:
4 divided by 25 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 25

Advancing to step 2:
When dividing 43 by 25, we get 1 with a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 25 away from 43, we end up with 18.
Include the next digit (6) from the dividend after 18, then repeat: 186 / 25

Let's proceed to step 3:
If we divide 186 by 25, we get 7 and a remainder of 11.
Put 7 as the next digit of the answer. 
Result so far: 17.0
If we take 175 away from 186, we end up with 11.
Bring next digit (8) of the dividend behind the 11 and repeat the process: 118 / 25

Let's proceed to step 4:
If we divide 118 by 25, we get 4 and a remainder of 18.
Write down 4 as next digit of the result. 
Result so far: 174.0
The remainder is 18 after subtracting 100 from 118.
Append the next digit (0) from the dividend to 18 and continue with: 180 / 25

Advancing to step 5:
25 goes into 180 7 times with a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 1747.0
If we take 175 away from 180, we end up with 5.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 25

Going ahead to step 6:
25 can be fit into 57 2 times, resulting in a remainder of 7.
Record the quotient 2 as the next digit in the result. 
Result so far: 17472.0
Deduct 50 from 57 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 7:
25 can be fit into 70 2 times, resulting in a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 17472.2
Deduct 50 from 70 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 8:
25 can be fit into 200 8 times, resulting in a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 17472.28
If we take 200 away from 200, 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.

Moving on to step 9:
When dividing 0 by 25, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 17472.28
Subtracting 0 from 0 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.

Moving on to step 10:
0 divided by 25 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 17472.28
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.

The final result is 17472.28 with a remainder of 0.0.