21798 divided by 84 
The aim is to understand the frequency of 84 in 21798.

Going ahead to step 1:
84 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 84

On to step 2:
84 goes into 21 0 times with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Bring next digit (7) of the dividend behind the 21 and repeat the process: 217 / 84

Moving on to step 3:
The number 84 fits into 217 2 times, leaving a remainder of 49.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 168 away from 217, we end up with 49.
Append the next digit (9) from the dividend to 49 and continue with: 499 / 84

Let's proceed to step 4:
When dividing 499 by 84, we get 5 with a remainder of 79.
Put 5 as the next digit of the answer. 
Result so far: 25.0
Subtracting 420 from 499 leaves us with 79.
Include the next digit (8) from the dividend after 79, then repeat: 798 / 84

Let's proceed to step 5:
84 goes into 798 9 times with a remainder of 42.
The next digit of our result is 9. 
Result so far: 259.0
The remainder is 42 after subtracting 756 from 798.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 6:
If we divide 420 by 84, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 259.5
The remainder is 0 after subtracting 420 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 7:
84 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 259.5
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.

Let's proceed to step 8:
84 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 259.5
Subtract 0 from 0 to get 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 outcome is 259.5, with a leftover of 0.0.