using System;
using System.Text.RegularExpressions;
 
public class Test
{
	public static void Main()
	{
	Regex regex = new Regex(@"([\w\W]+)\s(\d+)");
            var match = regex.Match("R 25 de março 200");
            if (match.Success) {
                string endereco = match.Groups["1"].Value;
                string numero = match.Groups["2"].Value;
                Console.WriteLine(endereco);
                Console.WriteLine(numero);
            }
	}
}

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