using System;
using System.Text.RegularExpressions;
public class Test
{
public static void Main()
{
String test ="m.van5/5 - 1248 ccm - 55 kW";
Regex rgx = new Regex("[^0-9-//]");
Console.WriteLine(rgx.Replace(test, ""));
}
}
dXNpbmcgU3lzdGVtOwp1c2luZyBTeXN0ZW0uVGV4dC5SZWd1bGFyRXhwcmVzc2lvbnM7CgpwdWJsaWMgY2xhc3MgVGVzdAp7CglwdWJsaWMgc3RhdGljIHZvaWQgTWFpbigpCgl7CgkKCgkJCVN0cmluZyB0ZXN0ID0ibS52YW41LzUgLSAxMjQ4IGNjbSAtIDU1IGtXIjsKCQkJUmVnZXggcmd4ID0gbmV3IFJlZ2V4KCJbXjAtOS0vL10iKTsKCQkJQ29uc29sZS5Xcml0ZUxpbmUocmd4LlJlcGxhY2UodGVzdCwgIiIpKTsKCQkKCX0KfQ==