Multiples of 3 and 5

Description:

If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.

If we list all the natural numbers below 20 that are multiples of 3 or 5, we get 3, 5, 6, 9, 10, 12, 15 and 18. The sum of these multiples is 78.

Finish the solution so that it returns the sum of all the multiples of 3 or 5 below the number passed in.

Note:

If the number is a multiple of both 3 and 5, only count it once.

My Solution:

public static int solution(int number) {
int multipleCount = 0;

for (int i = 0; i < number; i++) {

if (i % 3 == 0 ) {
multipleCount += i;
}
if (i % 5 == 0) {
multipleCount += i;
}
if (i % 15 == 0) {
multipleCount -= i;
}
}
return multipleCount;
}