We look at the division of 616507 by 25 
The aim is to understand the frequency of 25 in 616507.

Moving on to 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
If we take 0 away from 6, we end up with 6.
Take the next digit (1) from the dividend and append it to 6, then repeat: 61 / 25

Going ahead to step 2:
25 can be fit into 61 2 times, resulting in a remainder of 11.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 50 from 61 leaves us with 11.
Include the next digit (6) from the dividend after 11, then repeat: 116 / 25

Let's proceed to step 3:
25 can be fit into 116 4 times, resulting in a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
Deduct 100 from 116 and we're left with 16.
Grab the next digit (5) from the dividend, add it to 16, then carry on: 165 / 25

Advancing to step 4:
The number 25 fits into 165 6 times, leaving a remainder of 15.
The next digit of our result is 6. 
Result so far: 246.0
Subtracting 150 from 165 leaves us with 15.
Fetch the next digit (0) from the dividend, attach it to 15 and continue: 150 / 25

Advancing to step 5:
The number 25 fits into 150 6 times, leaving a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 2466.0
Deduct 150 from 150 and we're left with 0.
Include the next digit (7) from the dividend after 0, then repeat: 7 / 25

Advancing to step 6:
If we divide 7 by 25, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 24660.0
The remainder is 7 after subtracting 0 from 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:
The number 25 fits into 70 2 times, leaving a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 24660.2
If we take 50 away from 70, we end up 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.

Moving on to step 8:
The number 25 fits into 200 8 times, leaving a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 24660.28
Deduct 200 from 200 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.

Let's proceed to step 9:
If we divide 0 by 25, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 24660.28
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.

Advancing to step 10:
The number 25 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 24660.28
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.

The quotient of the division is 24660.28, and the remainder is 0.0.