We look at the division of 509047 by 28 
The aim is to understand the frequency of 28 in 509047.

Let's proceed to step 1:
The number 28 fits into 5 0 times, leaving a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Append the next digit (0) from the dividend to 5 and continue with: 50 / 28

Step 2:
The number 28 fits into 50 1 times, leaving a remainder of 22.
The next digit of our result is 1. 
Result so far: 1.0
If we take 28 away from 50, we end up with 22.
Append the next digit (9) from the dividend to 22 and continue with: 229 / 28

Moving on to step 3:
28 goes into 229 8 times with a remainder of 5.
The next digit of our result is 8. 
Result so far: 18.0
If we take 224 away from 229, we end up with 5.
Append the next digit (0) from the dividend to 5 and continue with: 50 / 28

Advancing to step 4:
28 can be fit into 50 1 times, resulting in a remainder of 22.
Use 1 as the next digit of our solution. 
Result so far: 181.0
If we subtract 28 from 50, we get 22.
Take the next digit (4) from the dividend and append it to 22, then repeat: 224 / 28

Moving on to step 5:
The number 28 fits into 224 8 times, leaving a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 1818.0
Subtracting 224 from 224 leaves us with 0.
Take the next digit (7) from the dividend and append it to 0, then repeat: 7 / 28

Step 6:
When dividing 7 by 28, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 18180.0
Subtract 0 from 7 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 7:
28 can be fit into 70 2 times, resulting in a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 18180.2
If we take 56 away from 70, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 8:
When dividing 140 by 28, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 18180.25
Subtracting 140 from 140 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.

Advancing to step 9:
If we divide 0 by 28, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 18180.25
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.

Let's proceed to step 10:
28 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 18180.25
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 final result is 18180.25 with a remainder of 0.0.