We look at the division of 578732 by 28 
The aim is to understand the frequency of 28 in 578732.

Step 1:
28 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 28

Step 2:
57 divided by 28 is 2 with a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 56 away from 57, we end up with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 28

Going ahead to step 3:
28 goes into 18 0 times with a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 20.0
If we take 0 away from 18, we end up with 18.
Include the next digit (7) from the dividend after 18, then repeat: 187 / 28

On to step 4:
When dividing 187 by 28, we get 6 with a remainder of 19.
Write down 6 as next digit of the result. 
Result so far: 206.0
Subtracting 168 from 187 leaves us with 19.
Fetch the next digit (3) from the dividend, attach it to 19 and continue: 193 / 28

Let's proceed to step 5:
193 divided by 28 is 6 with a remainder of 25.
Put 6 as the next digit of the answer. 
Result so far: 2066.0
If we subtract 168 from 193, we get 25.
Fetch the next digit (2) from the dividend, attach it to 25 and continue: 252 / 28

Let's proceed to step 6:
28 goes into 252 9 times with a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 20669.0
The remainder is 0 after subtracting 252 from 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 7:
28 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 20669.0
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.

Moving on to step 8:
28 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 20669.0
If we subtract 0 from 0, we 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.

The quotient of the division is 20669.0, and the remainder is 0.0.