We're dividing 820166 by 28 
The aim is to understand the frequency of 28 in 820166.

On to step 1:
When dividing 8 by 28, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (2) from the dividend, attach it to 8 and continue: 82 / 28

Step 2:
If we divide 82 by 28, we get 2 and a remainder of 26.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 56 from 82 and we're left with 26.
Bring next digit (0) of the dividend behind the 26 and repeat the process: 260 / 28

Let's proceed to step 3:
If we divide 260 by 28, we get 9 and a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 29.0
If we take 252 away from 260, we end up with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 28

On to step 4:
28 can be fit into 81 2 times, resulting in a remainder of 25.
Use 2 as the next digit of our solution. 
Result so far: 292.0
Subtracting 56 from 81 leaves us with 25.
Append the next digit (6) from the dividend to 25 and continue with: 256 / 28

Moving on to step 5:
The number 28 fits into 256 9 times, leaving a remainder of 4.
The number 9 becomes the next digit in our result. 
Result so far: 2929.0
Subtract 252 from 256 to get 4.
Include the next digit (6) from the dividend after 4, then repeat: 46 / 28

Going ahead to step 6:
The number 28 fits into 46 1 times, leaving a remainder of 18.
Record the quotient 1 as the next digit in the result. 
Result so far: 29291.0
If we take 28 away from 46, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 7:
If we divide 180 by 28, we get 6 and a remainder of 12.
The next digit of our result is 6. 
Result so far: 29291.6
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.

Moving on to step 8:
If we divide 120 by 28, we get 4 and a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 29291.64
If we take 112 away from 120, we end up 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.

Going ahead to step 9:
28 goes into 80 2 times with a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 29291.642
If we subtract 56 from 80, we 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.

Going ahead to step 10:
28 can be fit into 240 8 times, resulting in a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 29291.6428
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.

Moving on to step 11:
If we divide 160 by 28, we get 5 and a remainder of 20.
Put 5 as the next digit of the answer. 
Result so far: 29291.64285
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.

On to step 12:
The number 28 fits into 200 7 times, leaving a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 29291.642857
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 13:
The number 28 fits into 40 1 times, leaving a remainder of 12.
Write down 1 as next digit of the result. 
Result so far: 29291.6428571
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.

On to step 14:
120 divided by 28 is 4 with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 29291.64285714
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.

In conclusion, the division gives 29291.64285714 with a balance of 8e-09.