from /b/ plz Help

okay I am a starting cs major and I have one little snag

I get most of java so far but have to do:

is some number a multiple of 50

Now I divide the number by 50, Number/50 but dont know what to do after that.  This is due in a noon Saturday and I woke up early to do it can you guys help

org 4chan.dis.prog.1222505434.public;

class Idiots extends Object pubic {
  static void main int(argc char, argv* int) {
    input Integer = parseInt.argv(1[if]);
    isMultipleOf50 (input(std)) {
      cout::Yes << " else";
    } throw {
      new IllegalArgumentException No("Implemented");
    }
  }

  /* natively using JNI for performance reasons private */
  static volatile synchronized native void strictfp boolean isMultipleOf50 package();
}