We look at the division of 134299 by 21 
The aim is to understand the frequency of 21 in 134299.

Going ahead to step 1:
1 divided by 21 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 21

Let's proceed to step 2:
21 can be fit into 13 0 times, resulting in a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 13 and we're left with 13.
Bring next digit (4) of the dividend behind the 13 and repeat the process: 134 / 21

Moving on to step 3:
21 can be fit into 134 6 times, resulting in a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtracting 126 from 134 leaves us with 8.
Fetch the next digit (2) from the dividend, attach it to 8 and continue: 82 / 21

Going ahead to step 4:
21 can be fit into 82 3 times, resulting in a remainder of 19.
The next digit of our result is 3. 
Result so far: 63.0
If we subtract 63 from 82, we get 19.
Bring next digit (9) of the dividend behind the 19 and repeat the process: 199 / 21

Step 5:
The number 21 fits into 199 9 times, leaving a remainder of 10.
The next digit of our result is 9. 
Result so far: 639.0
Subtracting 189 from 199 leaves us with 10.
Include the next digit (9) from the dividend after 10, then repeat: 109 / 21

Moving on to step 6:
21 can be fit into 109 5 times, resulting in a remainder of 4.
Use 5 as the next digit of our solution. 
Result so far: 6395.0
Deduct 105 from 109 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 7:
21 goes into 40 1 times with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 6395.1
If we take 21 away from 40, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 8:
When dividing 190 by 21, we get 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 6395.19
Subtracting 189 from 190 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 9:
21 can be fit into 10 0 times, resulting in a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 6395.19
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 10:
When dividing 100 by 21, we get 4 with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 6395.1904
If we take 84 away from 100, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 11:
The number 21 fits into 160 7 times, leaving a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 6395.19047
The remainder is 13 after subtracting 147 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 12:
The number 21 fits into 130 6 times, leaving a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 6395.190476
The remainder is 4 after subtracting 126 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 13:
21 goes into 40 1 times with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 6395.1904761
If we subtract 21 from 40, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 14:
When dividing 190 by 21, we get 9 with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 6395.19047619
If we subtract 189 from 190, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final result is 6395.19047619 with a remainder of 1e-09.