306279 divided by 28 
The aim is to understand the frequency of 28 in 306279.

On to step 1:
The number 28 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 28

Moving on to step 2:
28 can be fit into 30 1 times, resulting in a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 28 from 30 leaves us with 2.
Append the next digit (6) from the dividend to 2 and continue with: 26 / 28

Moving on to step 3:
The number 28 fits into 26 0 times, leaving a remainder of 26.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we take 0 away from 26, we end up with 26.
Append the next digit (2) from the dividend to 26 and continue with: 262 / 28

Step 4:
28 goes into 262 9 times with a remainder of 10.
Put 9 as the next digit of the answer. 
Result so far: 109.0
Subtract 252 from 262 to get 10.
Bring next digit (7) of the dividend behind the 10 and repeat the process: 107 / 28

Step 5:
The number 28 fits into 107 3 times, leaving a remainder of 23.
Use 3 as the next digit of our solution. 
Result so far: 1093.0
Subtract 84 from 107 to get 23.
Include the next digit (9) from the dividend after 23, then repeat: 239 / 28

Let's proceed to step 6:
28 can be fit into 239 8 times, resulting in a remainder of 15.
Put 8 as the next digit of the answer. 
Result so far: 10938.0
Subtract 224 from 239 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 7:
150 divided by 28 is 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 10938.5
If we subtract 140 from 150, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
28 can be fit into 100 3 times, resulting in a remainder of 16.
Write down 3 as next digit of the result. 
Result so far: 10938.53
If we subtract 84 from 100, we 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.

Moving on to step 9:
28 goes into 160 5 times with a remainder of 20.
Write down 5 as next digit of the result. 
Result so far: 10938.535
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.

On to step 10:
200 divided by 28 is 7 with a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 10938.5357
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.

Step 11:
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: 10938.53571
If we take 28 away from 40, 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.

Moving on to step 12:
120 divided by 28 is 4 with a remainder of 8.
The next digit of our result is 4. 
Result so far: 10938.535714
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.

Going ahead to step 13:
If we divide 80 by 28, we get 2 and a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 10938.5357142
Deduct 56 from 80 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 14:
28 goes into 240 8 times with a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 10938.53571428
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.

After the division, we end up with 10938.53571428 and a remainder of 1.6e-08.