782166 ÷ 28 
The aim is to understand the frequency of 28 in 782166.

Moving on to step 1:
When dividing 7 by 28, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 28

Let's proceed to step 2:
The number 28 fits into 78 2 times, leaving a remainder of 22.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 56 from 78 leaves us with 22.
Grab the next digit (2) from the dividend, add it to 22, then carry on: 222 / 28

Advancing to step 3:
The number 28 fits into 222 7 times, leaving a remainder of 26.
Put 7 as the next digit of the answer. 
Result so far: 27.0
Subtract 196 from 222 to get 26.
Grab the next digit (1) from the dividend, add it to 26, then carry on: 261 / 28

Advancing to step 4:
28 can be fit into 261 9 times, resulting in a remainder of 9.
The next digit of our result is 9. 
Result so far: 279.0
If we take 252 away from 261, we end up with 9.
Grab the next digit (6) from the dividend, add it to 9, then carry on: 96 / 28

On to step 5:
28 goes into 96 3 times with a remainder of 12.
Use 3 as the next digit of our solution. 
Result so far: 2793.0
If we take 84 away from 96, we end up with 12.
Take the next digit (6) from the dividend and append it to 12, then repeat: 126 / 28

Advancing to step 6:
28 can be fit into 126 4 times, resulting in a remainder of 14.
The next digit of our result is 4. 
Result so far: 27934.0
Subtract 112 from 126 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 7:
28 can be fit into 140 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 27934.5
The remainder is 0 after subtracting 140 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
28 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 27934.5
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
28 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 27934.5
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 27934.5 with a remainder of 0.0.