static long repeatedString(String s, long n) {
        int strLength = s.length();
        long aOccurrence = 0;
        long factor = n / strLength;
        long remainder = n % strLength;
        for (int i=0; i < strLength; i++) {
            if (s.charAt(i) == 'a') {
                aOccurrence += (i < remainder) ? factor + 1 : factor;
            }
        }
        return aOccurrence;
}