Static Methods in OOP in PHP

When working with classes, you can create methods that do not require creating an object for their call. Such methods are called static. To declare a method static, you need to write the keyword static after the access modifier:

<?php
	class Test
	{
		public static function method()
		{
			return '!!!';
		}
	}
?>

To access a static method, you need to write the class name, then two colons, and the method name. You do not need to create an object of the class, like this:

<?php
	echo Test::method(); // will output '!!!'
?>

Convert the methods of the following class into static ones:

<?php
	class Math
	{
		public function getSum($a, $b)
		{
			return $a + $b;
		}
		
		public function getProduct($a, $b)
		{
			return $a * $b;
		}
	}
?>