How do you call a function with a button? Unity 5 UI

I have two input field boxes that I would like the user of my application to fill-out with numbers. I have made a somewhat simple script to transform the imputed numbers into integers and then have them be multiplied. Lastly they are transformed back into a string.

I have named the function Product in my script and i would like for it to be called every time the user clicks a specific button. I want the answer to product to appear as a new text in the bottom of the screen.

So far i have an onclick script (it needs more) and i want to know how i can make it call the product function when the mouse is clicked even though the mouse click and product function are on two separate scripts and game objects.

Just an FYI....I have heard of the On value change function for input field boxes that should update it automatically but im unaware of how this works as well or how to implement it.

I attached the scripts below and if you need clarification feel free to ask!! Thanks in advance!

Calculation Script using UnityEngine; using UnityEngine.UI; using System.Collections; using System;

 public class Calculations : MonoBehaviour {
     
     public GameObject textField_1;
     public GameObject textField_2;
     public Text Result;
     InputField t1;
     InputField t2;
 
     void Start()
     {
         t1 = textField_1.GetComponent<InputField> ();
         t2 = textField_2.GetComponent<InputField> ();
     }
 
     
     public void Product() {
         int a = Convert.ToInt32(t1.text);
         int b = Convert.ToInt32(t2.text);
         int c = a*b;
         Result.text = c.ToString ();
     }
     
 }

Button click script

 using UnityEngine;
 using UnityEngine.UI;
 using System.Collections;
 using System;
 
 public class CalculateButton : MonoBehaviour {
 
 
     [SerializeField] private Button MyButton = null; // assign in the editor
     
     void Start() { MyButton.onClick.AddListener(() => { Product();});
     }
     
     // Update is called once per frame
     void Update () {
     
     }
 }