using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;

public class Test
{
	public static void Main()
	{
		var text = "some words....3,50000 - 11,0 .... text....";
		var match = Regex.Match(text, @"(\d+(?:,\d+)?)\s*-\s*(\d+(?:,\d+)*)");

		if (match.Success)
		{
		    Console.WriteLine("{0} - first number", match.Groups[1].Value);
		    Console.WriteLine("{0} - second number", match.Groups[2].Value);
		}
	}
}