We look at the division of 21875 by 82 
The aim is to understand the frequency of 82 in 21875.

On to step 1:
82 can be fit into 2 0 times, resulting in a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 82

Moving on to step 2:
The number 82 fits into 21 0 times, leaving a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Bring next digit (8) of the dividend behind the 21 and repeat the process: 218 / 82

Going ahead to step 3:
82 can be fit into 218 2 times, resulting in a remainder of 54.
The next digit of our result is 2. 
Result so far: 2.0
If we take 164 away from 218, we end up with 54.
Bring next digit (7) of the dividend behind the 54 and repeat the process: 547 / 82

Going ahead to step 4:
547 divided by 82 is 6 with a remainder of 55.
Use 6 as the next digit of our solution. 
Result so far: 26.0
Subtracting 492 from 547 leaves us with 55.
Take the next digit (5) from the dividend and append it to 55, then repeat: 555 / 82

Let's proceed to step 5:
When dividing 555 by 82, we get 6 with a remainder of 63.
Record the quotient 6 as the next digit in the result. 
Result so far: 266.0
Subtracting 492 from 555 leaves us with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Let's proceed to step 6:
The number 82 fits into 630 7 times, leaving a remainder of 56.
Put 7 as the next digit of the answer. 
Result so far: 266.7
Subtracting 574 from 630 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 7:
If we divide 560 by 82, we get 6 and a remainder of 68.
The next digit of our result is 6. 
Result so far: 266.76
If we take 492 away from 560, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 8:
When dividing 680 by 82, we get 8 with a remainder of 24.
Write down 8 as next digit of the result. 
Result so far: 266.768
Subtract 656 from 680 to 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.

Advancing to step 9:
When dividing 240 by 82, we get 2 with a remainder of 76.
Record the quotient 2 as the next digit in the result. 
Result so far: 266.7682
If we take 164 away from 240, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 10:
The number 82 fits into 760 9 times, leaving a remainder of 22.
Use 9 as the next digit of our solution. 
Result so far: 266.76829
The remainder is 22 after subtracting 738 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 11:
82 goes into 220 2 times with a remainder of 56.
Write down 2 as next digit of the result. 
Result so far: 266.768292
Deduct 164 from 220 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 12:
If we divide 560 by 82, we get 6 and a remainder of 68.
The next digit of our result is 6. 
Result so far: 266.7682926
If we take 492 away from 560, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 13:
If we divide 680 by 82, we get 8 and a remainder of 24.
Use 8 as the next digit of our solution. 
Result so far: 266.76829268
If we subtract 656 from 680, 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.

The quotient of the division is 266.76829268, and the remainder is 2.4e-08.