We're dividing 525529 by 28 
The aim is to understand the frequency of 28 in 525529.

Going ahead to step 1:
If we divide 5 by 28, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Take the next digit (2) from the dividend and append it to 5, then repeat: 52 / 28

On to step 2:
If we divide 52 by 28, we get 1 and a remainder of 24.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 28 from 52 leaves us with 24.
Include the next digit (5) from the dividend after 24, then repeat: 245 / 28

Let's proceed to step 3:
245 divided by 28 is 8 with a remainder of 21.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Deduct 224 from 245 and we're left with 21.
Take the next digit (5) from the dividend and append it to 21, then repeat: 215 / 28

Advancing to step 4:
When dividing 215 by 28, we get 7 with a remainder of 19.
Record the quotient 7 as the next digit in the result. 
Result so far: 187.0
The remainder is 19 after subtracting 196 from 215.
Fetch the next digit (2) from the dividend, attach it to 19 and continue: 192 / 28

Step 5:
The number 28 fits into 192 6 times, leaving a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 1876.0
The remainder is 24 after subtracting 168 from 192.
Fetch the next digit (9) from the dividend, attach it to 24 and continue: 249 / 28

Going ahead to step 6:
28 can be fit into 249 8 times, resulting in a remainder of 25.
The next digit of our result is 8. 
Result so far: 18768.0
Deduct 224 from 249 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 7:
28 goes into 250 8 times with a remainder of 26.
Use 8 as the next digit of our solution. 
Result so far: 18768.8
The remainder is 26 after subtracting 224 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 8:
When dividing 260 by 28, we get 9 with a remainder of 8.
The number 9 becomes the next digit in our result. 
Result so far: 18768.89
Subtracting 252 from 260 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 9:
The number 28 fits into 80 2 times, leaving a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 18768.892
The remainder is 24 after subtracting 56 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 10:
240 divided by 28 is 8 with a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 18768.8928
Subtract 224 from 240 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 11:
If we divide 160 by 28, we get 5 and a remainder of 20.
Write down 5 as next digit of the result. 
Result so far: 18768.89285
The remainder is 20 after subtracting 140 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 12:
200 divided by 28 is 7 with a remainder of 4.
The next digit of our result is 7. 
Result so far: 18768.892857
Deduct 196 from 200 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 13:
The number 28 fits into 40 1 times, leaving a remainder of 12.
The next digit of our result is 1. 
Result so far: 18768.8928571
Deduct 28 from 40 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.

Moving on to step 14:
28 can be fit into 120 4 times, resulting in a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 18768.89285714
Deduct 112 from 120 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final result is 18768.89285714 with a remainder of 8e-09.