We look at the division of 788613 by 25 
The aim is to understand the frequency of 25 in 788613.

Let's proceed to step 1:
The number 25 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 25

Going ahead to step 2:
25 can be fit into 78 3 times, resulting in a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 3 after subtracting 75 from 78.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 25

Step 3:
The number 25 fits into 38 1 times, leaving a remainder of 13.
Write down 1 as next digit of the result. 
Result so far: 31.0
Subtracting 25 from 38 leaves us with 13.
Fetch the next digit (6) from the dividend, attach it to 13 and continue: 136 / 25

Step 4:
136 divided by 25 is 5 with a remainder of 11.
Put 5 as the next digit of the answer. 
Result so far: 315.0
The remainder is 11 after subtracting 125 from 136.
Append the next digit (1) from the dividend to 11 and continue with: 111 / 25

Step 5:
If we divide 111 by 25, we get 4 and a remainder of 11.
Use 4 as the next digit of our solution. 
Result so far: 3154.0
If we take 100 away from 111, we end up with 11.
Include the next digit (3) from the dividend after 11, then repeat: 113 / 25

Step 6:
The number 25 fits into 113 4 times, leaving a remainder of 13.
Use 4 as the next digit of our solution. 
Result so far: 31544.0
If we subtract 100 from 113, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 7:
If we divide 130 by 25, we get 5 and a remainder of 5.
The next digit of our result is 5. 
Result so far: 31544.5
If we take 125 away from 130, we end up 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.

Step 8:
25 goes into 50 2 times with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 31544.52
If we take 50 away from 50, 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.

On to step 9:
0 divided by 25 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 31544.52
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.

Going ahead to step 10:
If we divide 0 by 25, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 31544.52
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.

After the division, we end up with 31544.52 and a remainder of 0.0.