We look at the division of 12648479 by 625 
The aim is to understand the frequency of 625 in 12648479.

On to step 1:
625 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 625

Step 2:
When dividing 12 by 625, we get 0 with a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Append the next digit (6) from the dividend to 12 and continue with: 126 / 625

Step 3:
If we divide 126 by 625, we get 0 and a remainder of 126.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 126 to get 126.
Bring next digit (4) of the dividend behind the 126 and repeat the process: 1264 / 625

Moving on to step 4:
The number 625 fits into 1264 2 times, leaving a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 1250 from 1264 and we're left with 14.
Append the next digit (8) from the dividend to 14 and continue with: 148 / 625

Let's proceed to step 5:
If we divide 148 by 625, we get 0 and a remainder of 148.
Write down 0 as next digit of the result. 
Result so far: 20.0
Subtracting 0 from 148 leaves us with 148.
Include the next digit (4) from the dividend after 148, then repeat: 1484 / 625

Moving on to step 6:
If we divide 1484 by 625, we get 2 and a remainder of 234.
Use 2 as the next digit of our solution. 
Result so far: 202.0
The remainder is 234 after subtracting 1250 from 1484.
Bring next digit (7) of the dividend behind the 234 and repeat the process: 2347 / 625

On to step 7:
625 goes into 2347 3 times with a remainder of 472.
Put 3 as the next digit of the answer. 
Result so far: 2023.0
The remainder is 472 after subtracting 1875 from 2347.
Include the next digit (9) from the dividend after 472, then repeat: 4729 / 625

Advancing to step 8:
625 goes into 4729 7 times with a remainder of 354.
The next digit of our result is 7. 
Result so far: 20237.0
Deduct 4375 from 4729 and we're left with 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Let's proceed to step 9:
The number 625 fits into 3540 5 times, leaving a remainder of 415.
Write down 5 as next digit of the result. 
Result so far: 20237.5
The remainder is 415 after subtracting 3125 from 3540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Moving on to step 10:
625 can be fit into 4150 6 times, resulting in a remainder of 400.
The next digit of our result is 6. 
Result so far: 20237.56
Deduct 3750 from 4150 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Going ahead to step 11:
625 goes into 4000 6 times with a remainder of 250.
Record the quotient 6 as the next digit in the result. 
Result so far: 20237.566
If we subtract 3750 from 4000, we get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Our division results in 20237.566 with a remaining 0.025.