We're dividing 309308 by 30 
The aim is to understand the frequency of 30 in 309308.

Advancing to step 1:
30 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 30

On to step 2:
30 divided by 30 is 1 with a remainder of 0.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 30 from 30, we get 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 30

Let's proceed to step 3:
When dividing 9 by 30, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtracting 0 from 9 leaves us with 9.
Append the next digit (3) from the dividend to 9 and continue with: 93 / 30

Going ahead to step 4:
When dividing 93 by 30, we get 3 with a remainder of 3.
The next digit of our result is 3. 
Result so far: 103.0
If we subtract 90 from 93, we get 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 30

Advancing to step 5:
30 can be fit into 30 1 times, resulting in a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 1031.0
The remainder is 0 after subtracting 30 from 30.
Append the next digit (8) from the dividend to 0 and continue with: 8 / 30

Going ahead to step 6:
The number 30 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 10310.0
Subtracting 0 from 8 leaves us 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.

Step 7:
The number 30 fits into 80 2 times, leaving a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 10310.2
If we take 60 away from 80, we end up 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.

Advancing to step 8:
When dividing 200 by 30, we get 6 with a remainder of 20.
The next digit of our result is 6. 
Result so far: 10310.26
Deduct 180 from 200 and we're left 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.

Moving on to step 9:
The number 30 fits into 200 6 times, leaving a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 10310.266
Subtract 180 from 200 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.

In conclusion, the division gives 10310.266 with a balance of 0.002.