531355 ÷ 28 
The aim is to understand the frequency of 28 in 531355.

Advancing to step 1:
When dividing 5 by 28, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (3) from the dividend after 5, then repeat: 53 / 28

Going ahead to step 2:
The number 28 fits into 53 1 times, leaving a remainder of 25.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 28 away from 53, we end up with 25.
Fetch the next digit (1) from the dividend, attach it to 25 and continue: 251 / 28

Going ahead to step 3:
If we divide 251 by 28, we get 8 and a remainder of 27.
The next digit of our result is 8. 
Result so far: 18.0
If we subtract 224 from 251, we get 27.
Grab the next digit (3) from the dividend, add it to 27, then carry on: 273 / 28

Moving on to step 4:
When dividing 273 by 28, we get 9 with a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 189.0
Subtract 252 from 273 to get 21.
Include the next digit (5) from the dividend after 21, then repeat: 215 / 28

Moving on to step 5:
The number 28 fits into 215 7 times, leaving a remainder of 19.
Use 7 as the next digit of our solution. 
Result so far: 1897.0
If we take 196 away from 215, we end up with 19.
Take the next digit (5) from the dividend and append it to 19, then repeat: 195 / 28

Moving on to step 6:
195 divided by 28 is 6 with a remainder of 27.
The next digit of our result is 6. 
Result so far: 18976.0
Deduct 168 from 195 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 7:
The number 28 fits into 270 9 times, leaving a remainder of 18.
Write down 9 as next digit of the result. 
Result so far: 18976.9
The remainder is 18 after subtracting 252 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 8:
28 goes into 180 6 times with a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 18976.96
If we take 168 away from 180, we end up 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.

Advancing to step 9:
28 goes into 120 4 times with a remainder of 8.
The next digit of our result is 4. 
Result so far: 18976.964
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.

Step 10:
The number 28 fits into 80 2 times, leaving a remainder of 24.
Record the quotient 2 as the next digit in the result. 
Result so far: 18976.9642
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.

Step 11:
28 can be fit into 240 8 times, resulting in a remainder of 16.
The next digit of our result is 8. 
Result so far: 18976.96428
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 12:
28 goes into 160 5 times with a remainder of 20.
Put 5 as the next digit of the answer. 
Result so far: 18976.964285
Deduct 140 from 160 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 13:
28 goes into 200 7 times with a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 18976.9642857
Subtract 196 from 200 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 14:
The number 28 fits into 40 1 times, leaving a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 18976.96428571
If we subtract 28 from 40, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 18976.96428571, with a leftover of 1.2e-08.