Write an Ajax calculator that presents three text boxes
labelled, "operand 1", "operand 2", and "result",
and four buttons labelled, "+", "-", "*", and "/".
When one of the buttons is clicked, the operands
and the operator (i.e. button pressed) should
be sent to a server-side script called calc.php
that will compute the result and send it back
code that processes the result when it is returned
and writes it into the result text box.
Do not simply compute the result on the client-side.
The goal of this exercise is to gain experience