using System;
using System.Linq;
using System.IO;
using System.Text.RegularExpressions;
public class Test
{
	public static void Main()
	{
		string text = "The the quick brown fox 23jumps o65ver th66e lazy dog.";
		var VAL = 4;
        Console.WriteLine(Regex.Replace(text, @"\d+", m => $"{VAL * int.Parse(m.Value)}"));
	}
	
}