556980 divided by 28 
The aim is to understand the frequency of 28 in 556980.

Let's proceed to step 1:
5 divided by 28 is 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 28

Let's proceed to step 2:
When dividing 55 by 28, we get 1 with a remainder of 27.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 28 from 55 and we're left with 27.
Grab the next digit (6) from the dividend, add it to 27, then carry on: 276 / 28

Advancing to step 3:
28 can be fit into 276 9 times, resulting in a remainder of 24.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
If we subtract 252 from 276, we get 24.
Include the next digit (9) from the dividend after 24, then repeat: 249 / 28

Let's proceed to step 4:
The number 28 fits into 249 8 times, leaving a remainder of 25.
The next digit of our result is 8. 
Result so far: 198.0
Subtracting 224 from 249 leaves us with 25.
Bring next digit (8) of the dividend behind the 25 and repeat the process: 258 / 28

Let's proceed to step 5:
28 can be fit into 258 9 times, resulting in a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 1989.0
If we take 252 away from 258, we end up with 6.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 28

Step 6:
The number 28 fits into 60 2 times, leaving a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 19892.0
Deduct 56 from 60 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 7:
The number 28 fits into 40 1 times, leaving a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 19892.1
Subtract 28 from 40 to 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.

Moving on to step 8:
120 divided by 28 is 4 with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 19892.14
Subtract 112 from 120 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 9:
28 goes into 80 2 times with a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 19892.142
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:
The number 28 fits into 240 8 times, leaving a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 19892.1428
The remainder is 16 after subtracting 224 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 11:
28 goes into 160 5 times with a remainder of 20.
Put 5 as the next digit of the answer. 
Result so far: 19892.14285
Subtract 140 from 160 to get 20.
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 12:
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: 19892.142857
The remainder is 4 after subtracting 196 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 13:
28 can be fit into 40 1 times, resulting in a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 19892.1428571
Subtract 28 from 40 to 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.

Moving on to step 14:
If we divide 120 by 28, we get 4 and a remainder of 8.
The next digit of our result is 4. 
Result so far: 19892.14285714
Subtracting 112 from 120 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.

The final outcome is 19892.14285714, with a leftover of 8e-09.