We look at the division of 21306489 by 202 
The aim is to understand the frequency of 202 in 21306489.

Going ahead to step 1:
The number 202 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 202

Advancing to step 2:
If we divide 21 by 202, we get 0 and a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Bring next digit (3) of the dividend behind the 21 and repeat the process: 213 / 202

Advancing to step 3:
When dividing 213 by 202, we get 1 with a remainder of 11.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 202 from 213 leaves us with 11.
Append the next digit (0) from the dividend to 11 and continue with: 110 / 202

Advancing to step 4:
202 goes into 110 0 times with a remainder of 110.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Deduct 0 from 110 and we're left with 110.
Include the next digit (6) from the dividend after 110, then repeat: 1106 / 202

Advancing to step 5:
If we divide 1106 by 202, we get 5 and a remainder of 96.
Use 5 as the next digit of our solution. 
Result so far: 105.0
The remainder is 96 after subtracting 1010 from 1106.
Bring next digit (4) of the dividend behind the 96 and repeat the process: 964 / 202

Advancing to step 6:
When dividing 964 by 202, we get 4 with a remainder of 156.
Record the quotient 4 as the next digit in the result. 
Result so far: 1054.0
The remainder is 156 after subtracting 808 from 964.
Take the next digit (8) from the dividend and append it to 156, then repeat: 1568 / 202

On to step 7:
The number 202 fits into 1568 7 times, leaving a remainder of 154.
Write down 7 as next digit of the result. 
Result so far: 10547.0
Subtracting 1414 from 1568 leaves us with 154.
Take the next digit (9) from the dividend and append it to 154, then repeat: 1549 / 202

Step 8:
202 goes into 1549 7 times with a remainder of 135.
Put 7 as the next digit of the answer. 
Result so far: 105477.0
The remainder is 135 after subtracting 1414 from 1549.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

On to step 9:
The number 202 fits into 1350 6 times, leaving a remainder of 138.
Write down 6 as next digit of the result. 
Result so far: 105477.6
Subtracting 1212 from 1350 leaves us with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Let's proceed to step 10:
The number 202 fits into 1380 6 times, leaving a remainder of 168.
Record the quotient 6 as the next digit in the result. 
Result so far: 105477.66
Subtract 1212 from 1380 to get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

The final outcome is 105477.66, with a leftover of 0.168.