We're dividing 34262 by 21 
The aim is to understand the frequency of 21 in 34262.

On to step 1:
21 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Include the next digit (4) from the dividend after 3, then repeat: 34 / 21

On to step 2:
21 goes into 34 1 times with a remainder of 13.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 21 from 34 and we're left with 13.
Include the next digit (2) from the dividend after 13, then repeat: 132 / 21

Going ahead to step 3:
21 goes into 132 6 times with a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 16.0
Subtract 126 from 132 to get 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 21

On to step 4:
When dividing 66 by 21, we get 3 with a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 163.0
If we subtract 63 from 66, we get 3.
Take the next digit (2) from the dividend and append it to 3, then repeat: 32 / 21

Advancing to step 5:
21 goes into 32 1 times with a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 1631.0
If we subtract 21 from 32, we 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.

On to step 6:
21 can be fit into 110 5 times, resulting in a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 1631.5
If we subtract 105 from 110, we get 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 7:
21 goes into 50 2 times with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 1631.52
Subtract 42 from 50 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 8:
80 divided by 21 is 3 with a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 1631.523
Subtract 63 from 80 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 9:
170 divided by 21 is 8 with a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 1631.5238
Subtract 168 from 170 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 10:
If we divide 20 by 21, we get 0 and a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 1631.5238
Subtracting 0 from 20 leaves us with 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 11:
21 can be fit into 200 9 times, resulting in a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 1631.523809
Deduct 189 from 200 and we're left 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.

On to step 12:
The number 21 fits into 110 5 times, leaving a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 1631.5238095
If we take 105 away from 110, we end up 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.

Going ahead to step 13:
When dividing 50 by 21, we get 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 1631.52380952
If we subtract 42 from 50, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 1631.52380952, with a leftover of 8e-09.