Im a PHP beginner who is trying to create a simple calculator which will +,-,/ and * two numbers that are entered by the user. I have used a switch statement to do this.

<html>
<head>
<title> Calculator </title>
</head>
<body>
<?php
$Operator=$_POST[Operator];
$Number1=$_POST[Number1];
$Number2=$_POST[Number2];
Switch($Operator) {
case"+":
$Answer=$Number1+$Number2;
Print $Answer;
Break;
case"-":
$Answer=$Number1-$Number2;
Print $Answer;
Break;
case"*":
$Answer=$Number1*$Number2;
Print $Answer;
Break;
case"/":
$Answer=$Number1/$Number2;
Print $Answer;
Break;
}
<?
</body>
</html>

When I try to run the program I receive the error 'Unexpected '<'. Any help please? Much appreciated, Thanks x