339361 divided by 15 
The aim is to understand the frequency of 15 in 339361.

Let's proceed to step 1:
If we divide 3 by 15, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 15

Step 2:
The number 15 fits into 33 2 times, leaving a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 30 away from 33, we end up with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 15

Moving on to step 3:
When dividing 39 by 15, we get 2 with a remainder of 9.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
The remainder is 9 after subtracting 30 from 39.
Append the next digit (3) from the dividend to 9 and continue with: 93 / 15

Advancing to step 4:
15 can be fit into 93 6 times, resulting in a remainder of 3.
The number 6 becomes the next digit in our result. 
Result so far: 226.0
Subtract 90 from 93 to get 3.
Include the next digit (6) from the dividend after 3, then repeat: 36 / 15

Let's proceed to step 5:
When dividing 36 by 15, we get 2 with a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 2262.0
If we subtract 30 from 36, we get 6.
Take the next digit (1) from the dividend and append it to 6, then repeat: 61 / 15

Step 6:
61 divided by 15 is 4 with a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 22624.0
If we take 60 away from 61, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
When dividing 10 by 15, we get 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 22624.0
Subtracting 0 from 10 leaves us 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.

Going ahead to step 8:
If we divide 100 by 15, we get 6 and a remainder of 10.
The next digit of our result is 6. 
Result so far: 22624.06
Subtract 90 from 100 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 9:
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: 22624.066
Subtracting 90 from 100 leaves us 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.

Our division results in 22624.066 with a remaining 0.001.