We divide 10520681 by 30
The aim is to understand the frequency of 30 in 10520681.

Step 1:
30 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 30

Step 2:
The number 30 fits into 10 0 times, leaving a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 10 leaves us with 10.
Fetch the next digit (5) from the dividend, attach it to 10 and continue: 105 / 30

On to step 3:
30 can be fit into 105 3 times, resulting in a remainder of 15.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 90 from 105 and we're left with 15.
Include the next digit (2) from the dividend after 15, then repeat: 152 / 30

Going ahead to step 4:
30 can be fit into 152 5 times, resulting in a remainder of 2.
The number 5 becomes the next digit in our result. 
Result so far: 35.0
The remainder is 2 after subtracting 150 from 152.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 30

Going ahead to step 5:
20 divided by 30 is 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 350.0
The remainder is 20 after subtracting 0 from 20.
Fetch the next digit (6) from the dividend, attach it to 20 and continue: 206 / 30

Advancing to step 6:
30 can be fit into 206 6 times, resulting in a remainder of 26.
Put 6 as the next digit of the answer. 
Result so far: 3506.0
Subtracting 180 from 206 leaves us with 26.
Take the next digit (8) from the dividend and append it to 26, then repeat: 268 / 30

Let's proceed to step 7:
30 goes into 268 8 times with a remainder of 28.
The number 8 becomes the next digit in our result. 
Result so far: 35068.0
The remainder is 28 after subtracting 240 from 268.
Take the next digit (1) from the dividend and append it to 28, then repeat: 281 / 30

Step 8:
30 goes into 281 9 times with a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 350689.0
If we take 270 away from 281, we end up 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.

Going ahead to step 9:
30 can be fit into 110 3 times, resulting in a remainder of 20.
The next digit of our result is 3. 
Result so far: 350689.3
The remainder is 20 after subtracting 90 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 10:
30 can be fit into 200 6 times, resulting in a remainder of 20.
Put 6 as the next digit of the answer. 
Result so far: 350689.36
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.

On to step 11:
When dividing 200 by 30, we get 6 with a remainder of 20.
The next digit of our result is 6. 
Result so far: 350689.366
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.

After the division, we end up with 350689.366 and a remainder of 0.002.