/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String x = "987sdf09870987=-0\\\\\\`42";
    	x = x.replaceAll("[^0-9]+", "**$0**");
    	System.out.println(x);
	}
}