We divide 818536 by 28
The aim is to understand the frequency of 28 in 818536.

Let's proceed to step 1:
When dividing 8 by 28, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 28

Step 2:
28 goes into 81 2 times with a remainder of 25.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 56 from 81 to get 25.
Append the next digit (8) from the dividend to 25 and continue with: 258 / 28

Going ahead to step 3:
The number 28 fits into 258 9 times, leaving a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 29.0
Subtracting 252 from 258 leaves us with 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 28

On to step 4:
28 can be fit into 65 2 times, resulting in a remainder of 9.
The next digit of our result is 2. 
Result so far: 292.0
If we take 56 away from 65, we end up with 9.
Grab the next digit (3) from the dividend, add it to 9, then carry on: 93 / 28

On to step 5:
28 goes into 93 3 times with a remainder of 9.
The next digit of our result is 3. 
Result so far: 2923.0
If we subtract 84 from 93, we get 9.
Fetch the next digit (6) from the dividend, attach it to 9 and continue: 96 / 28

Going ahead to step 6:
If we divide 96 by 28, we get 3 and a remainder of 12.
Put 3 as the next digit of the answer. 
Result so far: 29233.0
Subtracting 84 from 96 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.

Advancing to step 7:
If we divide 120 by 28, we get 4 and a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 29233.4
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.

Step 8:
The number 28 fits into 80 2 times, leaving a remainder of 24.
The next digit of our result is 2. 
Result so far: 29233.42
Subtracting 56 from 80 leaves us 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.

Let's proceed to step 9:
28 goes into 240 8 times with a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 29233.428
If we subtract 224 from 240, 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.

Advancing to step 10:
160 divided by 28 is 5 with a remainder of 20.
The next digit of our result is 5. 
Result so far: 29233.4285
If we take 140 away from 160, we end up 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.

Advancing to step 11:
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: 29233.42857
Deduct 196 from 200 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 12:
The number 28 fits into 40 1 times, leaving a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 29233.428571
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 13:
The number 28 fits into 120 4 times, leaving a remainder of 8.
The next digit of our result is 4. 
Result so far: 29233.4285714
If we subtract 112 from 120, we 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.

Step 14:
28 can be fit into 80 2 times, resulting in a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 29233.42857142
Subtracting 56 from 80 leaves us 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.

The final result is 29233.42857142 with a remainder of 2.4e-08.