Find the sum of all numbers from 1 to n, excluding those that are divisible by 3 or 5.

1. Create a method called sumNotDivisibleBy3Or5(int n) that returns an int.
2. Inside this method, create a for loop that iterates from 1 to n (inclusive).
3. In each iteration, check if the number is not divisible by 3 and not divisible by 5.
4. If the number passes the condition, add it to a running total sum.
5. Return the total sum after the loop ends.