public class PresisiMelebar {
    public static void main(String[] args) {
        int penduduk = 123456789;
        float kasar = penduduk;    // int -> float, otomatis
        System.out.println("int   : " + penduduk);
        System.out.println("float : " + kasar);

        long butir = 9007199254740993L;
        double kasarL = butir;     // long -> double, otomatis
        System.out.println("long  : " + butir);
        System.out.println("double: " + kasarL);
    }
}