import franck.cse5910.Gold;

public class GoldPrice
{
    public static void main(String[] args)
    {
	final int GRAMS_PER_KILO = 1000;
	double ouncePerKilo = GRAMS_PER_KILO / Gold.GRAMS_PER_TROY_OUNCE;
	double price = ouncePerKilo * Gold.price();
	System.out.printf("%.2f\n", price);
    }
}