We're dividing 531022 by 28 
The aim is to understand the frequency of 28 in 531022.

Going ahead to step 1:
When dividing 5 by 28, we get 0 with a remainder of 5.
Write down 0 as next digit of the 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

On to step 2:
28 can be fit into 53 1 times, resulting in a remainder of 25.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 28 away from 53, we end up with 25.
Grab the next digit (1) from the dividend, add it to 25, then carry on: 251 / 28

Advancing to step 3:
28 can be fit into 251 8 times, resulting in a remainder of 27.
Record the quotient 8 as the next digit in the result. 
Result so far: 18.0
Deduct 224 from 251 and we're left with 27.
Take the next digit (0) from the dividend and append it to 27, then repeat: 270 / 28

Step 4:
28 can be fit into 270 9 times, resulting in a remainder of 18.
Record the quotient 9 as the next digit in the result. 
Result so far: 189.0
The remainder is 18 after subtracting 252 from 270.
Fetch the next digit (2) from the dividend, attach it to 18 and continue: 182 / 28

Step 5:
The number 28 fits into 182 6 times, leaving a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 1896.0
The remainder is 14 after subtracting 168 from 182.
Bring next digit (2) of the dividend behind the 14 and repeat the process: 142 / 28

Let's proceed to step 6:
28 can be fit into 142 5 times, resulting in a remainder of 2.
Write down 5 as next digit of the result. 
Result so far: 18965.0
If we take 140 away from 142, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
If we divide 20 by 28, we get 0 and a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 18965.0
Deduct 0 from 20 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.

Step 8:
The number 28 fits into 200 7 times, leaving a remainder of 4.
The next digit of our result is 7. 
Result so far: 18965.07
If we subtract 196 from 200, we 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 9:
40 divided by 28 is 1 with a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 18965.071
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 10:
If we divide 120 by 28, we get 4 and a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 18965.0714
The remainder is 8 after subtracting 112 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 11:
If we divide 80 by 28, we get 2 and a remainder of 24.
The number 2 becomes the next digit in our result. 
Result so far: 18965.07142
Subtract 56 from 80 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 12:
If we divide 240 by 28, we get 8 and a remainder of 16.
The next digit of our result is 8. 
Result so far: 18965.071428
If we take 224 away from 240, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 13:
28 can be fit into 160 5 times, resulting in a remainder of 20.
The next digit of our result is 5. 
Result so far: 18965.0714285
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.

Moving on to step 14:
The number 28 fits into 200 7 times, leaving a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 18965.07142857
If we take 196 away from 200, we end up 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.

The final outcome is 18965.07142857, with a leftover of 4e-09.