We look at the division of 305388 by 24 
The aim is to understand the frequency of 24 in 305388.

Step 1:
24 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 24

Moving on to step 2:
30 divided by 24 is 1 with a remainder of 6.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 24 from 30, we get 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 24

Moving on to step 3:
24 can be fit into 65 2 times, resulting in a remainder of 17.
Use 2 as the next digit of our solution. 
Result so far: 12.0
Deduct 48 from 65 and we're left with 17.
Take the next digit (3) from the dividend and append it to 17, then repeat: 173 / 24

Going ahead to step 4:
24 goes into 173 7 times with a remainder of 5.
The next digit of our result is 7. 
Result so far: 127.0
If we subtract 168 from 173, we get 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 24

Let's proceed to step 5:
The number 24 fits into 58 2 times, leaving a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 1272.0
Subtracting 48 from 58 leaves us with 10.
Bring next digit (8) of the dividend behind the 10 and repeat the process: 108 / 24

Step 6:
24 goes into 108 4 times with a remainder of 12.
The number 4 becomes the next digit in our result. 
Result so far: 12724.0
Deduct 96 from 108 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 7:
24 can be fit into 120 5 times, resulting in a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 12724.5
Subtract 120 from 120 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.

Going ahead to step 8:
When dividing 0 by 24, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 12724.5
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.

On to step 9:
24 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12724.5
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 final outcome is 12724.5, with a leftover of 0.0.