329289 divided by 15 
The aim is to understand the frequency of 15 in 329289.

On to step 1:
3 divided by 15 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (2) from the dividend and append it to 3, then repeat: 32 / 15

Step 2:
The number 15 fits into 32 2 times, leaving a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 2 after subtracting 30 from 32.
Take the next digit (9) from the dividend and append it to 2, then repeat: 29 / 15

Let's proceed to step 3:
If we divide 29 by 15, we get 1 and a remainder of 14.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
Subtract 15 from 29 to get 14.
Bring next digit (2) of the dividend behind the 14 and repeat the process: 142 / 15

Moving on to step 4:
15 can be fit into 142 9 times, resulting in a remainder of 7.
Write down 9 as next digit of the result. 
Result so far: 219.0
Deduct 135 from 142 and we're left with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 15

Moving on to step 5:
The number 15 fits into 78 5 times, leaving a remainder of 3.
The next digit of our result is 5. 
Result so far: 2195.0
Subtract 75 from 78 to get 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 15

Advancing to step 6:
15 goes into 39 2 times with a remainder of 9.
The number 2 becomes the next digit in our result. 
Result so far: 21952.0
If we take 30 away from 39, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
90 divided by 15 is 6 with a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 21952.6
If we subtract 90 from 90, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
When dividing 0 by 15, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 21952.6
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
If we divide 0 by 15, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 21952.6
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 21952.6 with a remainder of 0.0.