كيف تم تحويل قيمة الـHashCode؟

public class Student {
   
  String name;
  float math;
  float arabic;
  float science;

  public Student(String name, float math, float arabic, float science) {
    this.name = name;
    this.math = math;
    this.arabic = arabic;
    this.science = science;
  }
   
  @Override
  public int hashCode() {
    return (int) (math + arabic + science) / 3;
  }

}