using static System.Console;
using System.Globalization;
public class Program {
public static void Main() {
WriteLine(double.Parse("-8.709006", CultureInfo.InvariantCulture).ToString(new CultureInfo("en-US", true)));
}
}
//https://pt.stackoverflow.com/q/52015/101
dXNpbmcgc3RhdGljIFN5c3RlbS5Db25zb2xlOwp1c2luZyBTeXN0ZW0uR2xvYmFsaXphdGlvbjsKCQkJCQkKcHVibGljIGNsYXNzIFByb2dyYW0gewoJcHVibGljIHN0YXRpYyB2b2lkIE1haW4oKSB7CgkJV3JpdGVMaW5lKGRvdWJsZS5QYXJzZSgiLTguNzA5MDA2IiwgQ3VsdHVyZUluZm8uSW52YXJpYW50Q3VsdHVyZSkuVG9TdHJpbmcobmV3IEN1bHR1cmVJbmZvKCJlbi1VUyIsIHRydWUpKSk7Cgl9Cn0KCi8vaHR0cHM6Ly9wdC5zdGFja292ZXJmbG93LmNvbS9xLzUyMDE1LzEwMQ==