We divide 999131 by 30
The aim is to understand the frequency of 30 in 999131.

Let's proceed to step 1:
30 can be fit into 9 0 times, resulting in a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 30

Moving on to step 2:
When dividing 99 by 30, we get 3 with a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 90 from 99 to get 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 30

Step 3:
99 divided by 30 is 3 with a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 33.0
If we take 90 away from 99, we end up with 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 30

Step 4:
30 can be fit into 91 3 times, resulting in a remainder of 1.
The next digit of our result is 3. 
Result so far: 333.0
Deduct 90 from 91 and we're left with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 30

Moving on to step 5:
When dividing 13 by 30, we get 0 with a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 3330.0
If we take 0 away from 13, we end up with 13.
Include the next digit (1) from the dividend after 13, then repeat: 131 / 30

Moving on to step 6:
When dividing 131 by 30, we get 4 with a remainder of 11.
The next digit of our result is 4. 
Result so far: 33304.0
Subtract 120 from 131 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.

Let's proceed to step 7:
30 goes into 110 3 times with a remainder of 20.
Put 3 as the next digit of the answer. 
Result so far: 33304.3
Subtract 90 from 110 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.

Step 8:
30 can be fit into 200 6 times, resulting in a remainder of 20.
The next digit of our result is 6. 
Result so far: 33304.36
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.

Advancing to step 9:
The number 30 fits into 200 6 times, leaving a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 33304.366
Subtracting 180 from 200 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.

The final result is 33304.366 with a remainder of 0.002.