what am I missing?

using System;

class Program
{

    // YOUR CODE HERE: Define a method named Multiply. Remember
    // to use the "static" and "void" keywords: "static void
    // Multiply" (without quotes). Multiply should take two
    // "double" values as parameters.

    static void Multiply( double  first, double second )
    {
        return first * second;

    }

    static void Main(string[] args)
    {
        double total =Multiply(2.5,2);
        Console.WriteLine(Multiply);
        double total = Multiply (6,7);
        Console.WriteLine(Multiply);

        // YOUR CODE HERE:
        // Call Multiply with two arguments: 2.5 and 2.
        // YOUR CODE HERE:
        // Call Multiply with two arguments: 6 and 7.
    }

}