We divide 331390 by 15
The aim is to understand the frequency of 15 in 331390.

Let's proceed to step 1:
15 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 15

On to step 2:
When dividing 33 by 15, we get 2 with a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 30 from 33, we get 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 15

On to step 3:
15 can be fit into 31 2 times, resulting in a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 22.0
Subtract 30 from 31 to get 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 15

On to step 4:
When dividing 13 by 15, we get 0 with a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 220.0
If we take 0 away from 13, we end up with 13.
Bring next digit (9) of the dividend behind the 13 and repeat the process: 139 / 15

Going ahead to step 5:
15 can be fit into 139 9 times, resulting in a remainder of 4.
Record the quotient 9 as the next digit in the result. 
Result so far: 2209.0
If we take 135 away from 139, we end up with 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 15

Step 6:
15 can be fit into 40 2 times, resulting in a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 22092.0
Subtract 30 from 40 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 7:
When dividing 100 by 15, we get 6 with a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 22092.6
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
If we divide 100 by 15, we get 6 and a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 22092.66
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

In conclusion, the division gives 22092.66 with a balance of 0.01.