using System;
public class Program
{
public static void Main()
Console.WriteLine("5 * 3 - 7 = " + (5 * 3 - 7) );
Console.WriteLine("4 * 3 / 2 = " + 4 * 3 / 2);
Console.WriteLine("5 * 3 / 2 = " + 5 * 3 / 2);
Console.WriteLine("(6 + 5) * 3 = " + (6 + 5) * 3);
}