We divide 648208 by 25
The aim is to understand the frequency of 25 in 648208.

Advancing to step 1:
6 divided by 25 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 25

Moving on to step 2:
25 goes into 64 2 times with a remainder of 14.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 14 after subtracting 50 from 64.
Fetch the next digit (8) from the dividend, attach it to 14 and continue: 148 / 25

On to step 3:
If we divide 148 by 25, we get 5 and a remainder of 23.
Put 5 as the next digit of the answer. 
Result so far: 25.0
If we take 125 away from 148, we end up with 23.
Include the next digit (2) from the dividend after 23, then repeat: 232 / 25

Advancing to step 4:
If we divide 232 by 25, we get 9 and a remainder of 7.
Use 9 as the next digit of our solution. 
Result so far: 259.0
Subtracting 225 from 232 leaves us with 7.
Grab the next digit (0) from the dividend, add it to 7, then carry on: 70 / 25

On to step 5:
70 divided by 25 is 2 with a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 2592.0
The remainder is 20 after subtracting 50 from 70.
Take the next digit (8) from the dividend and append it to 20, then repeat: 208 / 25

Moving on to step 6:
The number 25 fits into 208 8 times, leaving a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 25928.0
Subtract 200 from 208 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 7:
25 can be fit into 80 3 times, resulting in a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 25928.3
Subtracting 75 from 80 leaves us 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.

Going ahead to step 8:
If we divide 50 by 25, we get 2 and a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 25928.32
Subtracting 50 from 50 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.

Let's proceed to step 9:
0 divided by 25 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 25928.32
Subtract 0 from 0 to 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.

Going ahead to step 10:
25 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 25928.32
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.

After the division, we end up with 25928.32 and a remainder of 0.0.