Modify the following C# program to perform the calculation on any mathml XML file. An example mathml is contained below. The modified program should be able to read a mathml file and perform the calculation inside it.

MATHML FILE: x 2 4 x 4 0

The program should be able to read and return the complete equation with necessary operators: "x²+4x+4=0"

Then the program should be able to calculate based on the equation given.

+using System; using System.Xml; using UnityEngine; using UnityEngine.UI;

namespace ParseXML { class PARSEMATH : MonoBehaviour {

void Start() { XmlDocument xmlDoc = new XmlDocument(); TextAsset textAsset = (TextAsset)Resources.Load("testing"); xmlDoc.LoadXml(textAsset.text);

foreach (XmlNode node in xmlDoc.DocumentElement.ChildNodes) { string text = node.InnerText; Debug.Log(node.InnerText); } } } }