We divide 549038 by 21
The aim is to understand the frequency of 21 in 549038.

Moving on to step 1:
If we divide 5 by 21, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 21

On to step 2:
21 can be fit into 54 2 times, resulting in a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 12 after subtracting 42 from 54.
Bring next digit (9) of the dividend behind the 12 and repeat the process: 129 / 21

Advancing to step 3:
129 divided by 21 is 6 with a remainder of 3.
Write down 6 as next digit of the result. 
Result so far: 26.0
If we subtract 126 from 129, we get 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 21

Going ahead to step 4:
21 can be fit into 30 1 times, resulting in a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 261.0
If we subtract 21 from 30, we get 9.
Include the next digit (3) from the dividend after 9, then repeat: 93 / 21

Going ahead to step 5:
21 goes into 93 4 times with a remainder of 9.
Write down 4 as next digit of the result. 
Result so far: 2614.0
Subtracting 84 from 93 leaves us with 9.
Take the next digit (8) from the dividend and append it to 9, then repeat: 98 / 21

On to step 6:
98 divided by 21 is 4 with a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 26144.0
Deduct 84 from 98 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 7:
140 divided by 21 is 6 with a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 26144.6
If we take 126 away from 140, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 8:
140 divided by 21 is 6 with a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 26144.66
Deduct 126 from 140 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

In conclusion, the division gives 26144.66 with a balance of 0.014.