We divide 484883 by 21
The aim is to understand the frequency of 21 in 484883.

Let's proceed to step 1:
When dividing 4 by 21, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 21

Going ahead to step 2:
21 goes into 48 2 times with a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 42 from 48, we get 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 21

Let's proceed to step 3:
When dividing 64 by 21, we get 3 with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
Subtract 63 from 64 to get 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 21

Moving on to step 4:
18 divided by 21 is 0 with a remainder of 18.
The next digit of our result is 0. 
Result so far: 230.0
Deduct 0 from 18 and we're left with 18.
Append the next digit (8) from the dividend to 18 and continue with: 188 / 21

Going ahead to step 5:
21 can be fit into 188 8 times, resulting in a remainder of 20.
Put 8 as the next digit of the answer. 
Result so far: 2308.0
Subtract 168 from 188 to get 20.
Grab the next digit (3) from the dividend, add it to 20, then carry on: 203 / 21

Step 6:
21 can be fit into 203 9 times, resulting in a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 23089.0
The remainder is 14 after subtracting 189 from 203.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 7:
140 divided by 21 is 6 with a remainder of 14.
The next digit of our result is 6. 
Result so far: 23089.6
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.

On to step 8:
21 can be fit into 140 6 times, resulting in a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 23089.66
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.

Our division results in 23089.66 with a remaining 0.014.