public class OverallGrade {
   public static void main(String[] args) {
      // hw1 = 20, hw2 = 32, hw3 = 40
      int homeworkTotal = 20 + 32 + 40;
      int homeworkScore = 17 + 30 + 40;
      double homework = homeworkScore / homeworkTotal * 100; // what's wrong with this line?
       
      int midterm = 81;
      int fin = 74;
       
      double overall = 0.45 * homework + 0.2 * midterm + 0.35 * fin;
      System.out.println("overall = " + overall);
   }
}