We divide 489134 by 21
The aim is to understand the frequency of 21 in 489134.

Let's proceed to step 1:
21 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 21

Advancing to step 2:
The number 21 fits into 48 2 times, leaving a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 42 from 48 and we're left with 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 21

Advancing to step 3:
21 can be fit into 69 3 times, resulting in a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 23.0
Subtract 63 from 69 to get 6.
Take the next digit (1) from the dividend and append it to 6, then repeat: 61 / 21

Step 4:
When dividing 61 by 21, we get 2 with a remainder of 19.
Put 2 as the next digit of the answer. 
Result so far: 232.0
The remainder is 19 after subtracting 42 from 61.
Grab the next digit (3) from the dividend, add it to 19, then carry on: 193 / 21

Going ahead to step 5:
When dividing 193 by 21, we get 9 with a remainder of 4.
Record the quotient 9 as the next digit in the result. 
Result so far: 2329.0
If we subtract 189 from 193, we get 4.
Include the next digit (4) from the dividend after 4, then repeat: 44 / 21

Let's proceed to step 6:
21 can be fit into 44 2 times, resulting in a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 23292.0
Subtract 42 from 44 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 7:
21 goes into 20 0 times with a remainder of 20.
The next digit of our result is 0. 
Result so far: 23292.0
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 8:
21 goes into 200 9 times with a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 23292.09
Subtract 189 from 200 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 9:
The number 21 fits into 110 5 times, leaving a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 23292.095
Subtracting 105 from 110 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 10:
When dividing 50 by 21, we get 2 with a remainder of 8.
The next digit of our result is 2. 
Result so far: 23292.0952
If we take 42 away from 50, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 11:
The number 21 fits into 80 3 times, leaving a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 23292.09523
Deduct 63 from 80 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 12:
21 can be fit into 170 8 times, resulting in a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 23292.095238
Deduct 168 from 170 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 13:
21 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 23292.095238
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 14:
21 can be fit into 200 9 times, resulting in a remainder of 11.
The next digit of our result is 9. 
Result so far: 23292.09523809
If we take 189 away from 200, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

In conclusion, the division gives 23292.09523809 with a balance of 1.1e-08.