457543 divided by 28 
The aim is to understand the frequency of 28 in 457543.

Step 1:
The number 28 fits into 4 0 times, leaving a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 28

Advancing to step 2:
If we divide 45 by 28, we get 1 and a remainder of 17.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 28 from 45 and we're left with 17.
Grab the next digit (7) from the dividend, add it to 17, then carry on: 177 / 28

Advancing to step 3:
28 goes into 177 6 times with a remainder of 9.
Use 6 as the next digit of our solution. 
Result so far: 16.0
The remainder is 9 after subtracting 168 from 177.
Take the next digit (5) from the dividend and append it to 9, then repeat: 95 / 28

Advancing to step 4:
28 goes into 95 3 times with a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 163.0
Deduct 84 from 95 and we're left with 11.
Fetch the next digit (4) from the dividend, attach it to 11 and continue: 114 / 28

Moving on to step 5:
When dividing 114 by 28, we get 4 with a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 1634.0
Deduct 112 from 114 and we're left with 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 28

Let's proceed to step 6:
28 goes into 23 0 times with a remainder of 23.
Write down 0 as next digit of the result. 
Result so far: 16340.0
Subtracting 0 from 23 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 7:
230 divided by 28 is 8 with a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 16340.8
If we subtract 224 from 230, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 8:
The number 28 fits into 60 2 times, leaving a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 16340.82
Subtract 56 from 60 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.

On to step 9:
If we divide 40 by 28, we get 1 and a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 16340.821
Subtracting 28 from 40 leaves us 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.

Step 10:
The number 28 fits into 120 4 times, leaving a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 16340.8214
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.

Let's proceed to step 11:
When dividing 80 by 28, we get 2 with a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 16340.82142
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.

Let's proceed to step 12:
240 divided by 28 is 8 with a remainder of 16.
The next digit of our result is 8. 
Result so far: 16340.821428
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.
Write down 5 as next digit of the result. 
Result so far: 16340.8214285
Subtracting 140 from 160 leaves us 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.

Let's proceed to step 14:
28 can be fit into 200 7 times, resulting in a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 16340.82142857
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 result is 16340.82142857 with a remainder of 4e-09.