We're dividing 690969 by 25 
The aim is to understand the frequency of 25 in 690969.

Step 1:
6 divided by 25 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (9) from the dividend after 6, then repeat: 69 / 25

On to step 2:
25 goes into 69 2 times with a remainder of 19.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 50 from 69 and we're left with 19.
Take the next digit (0) from the dividend and append it to 19, then repeat: 190 / 25

Going ahead to step 3:
190 divided by 25 is 7 with a remainder of 15.
Use 7 as the next digit of our solution. 
Result so far: 27.0
If we subtract 175 from 190, we get 15.
Bring next digit (9) of the dividend behind the 15 and repeat the process: 159 / 25

Going ahead to step 4:
The number 25 fits into 159 6 times, leaving a remainder of 9.
The number 6 becomes the next digit in our result. 
Result so far: 276.0
Subtract 150 from 159 to get 9.
Fetch the next digit (6) from the dividend, attach it to 9 and continue: 96 / 25

Let's proceed to step 5:
25 can be fit into 96 3 times, resulting in a remainder of 21.
The next digit of our result is 3. 
Result so far: 2763.0
Deduct 75 from 96 and we're left with 21.
Fetch the next digit (9) from the dividend, attach it to 21 and continue: 219 / 25

Step 6:
25 can be fit into 219 8 times, resulting in a remainder of 19.
The next digit of our result is 8. 
Result so far: 27638.0
Deduct 200 from 219 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 7:
190 divided by 25 is 7 with a remainder of 15.
The next digit of our result is 7. 
Result so far: 27638.7
If we subtract 175 from 190, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 8:
25 goes into 150 6 times with a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 27638.76
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.

On to step 9:
If we divide 0 by 25, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 27638.76
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.

Step 10:
25 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 27638.76
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.

Our division results in 27638.76 with a remaining 0.0.