Let's divide 748808 by 15
The aim is to understand the frequency of 15 in 748808.

Advancing to step 1:
15 can be fit into 7 0 times, resulting in a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (4) from the dividend to 7 and continue with: 74 / 15

Advancing to step 2:
74 divided by 15 is 4 with a remainder of 14.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 60 from 74, we get 14.
Bring next digit (8) of the dividend behind the 14 and repeat the process: 148 / 15

Step 3:
15 can be fit into 148 9 times, resulting in a remainder of 13.
The next digit of our result is 9. 
Result so far: 49.0
Subtracting 135 from 148 leaves us with 13.
Bring next digit (8) of the dividend behind the 13 and repeat the process: 138 / 15

Moving on to step 4:
If we divide 138 by 15, we get 9 and a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 499.0
If we take 135 away from 138, we end up with 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 15

On to step 5:
If we divide 30 by 15, we get 2 and a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 4992.0
Subtract 30 from 30 to get 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 15

Step 6:
15 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 49920.0
Subtract 0 from 8 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:
The number 15 fits into 80 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 49920.5
Subtract 75 from 80 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 8:
15 goes into 50 3 times with a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 49920.53
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 9:
The number 15 fits into 50 3 times, leaving a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 49920.533
If we take 45 away from 50, 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.

The final result is 49920.533 with a remainder of 0.0005.