Write an app that allows users to process orders for fuzzy dice. The app should calculate the total price of the order, including tax and shipping. TextBoxes for inputting the order number, the customer name and the shipping address are provided. Initially, these fields contain text that describes their purpose. Provide CheckBoxes for selecting the fuzzy-dice color and TextBoxes for inputting the quantities of fuzzy dice to order. The app should update the total cost, tax and shipping when the user changes any one of the three quantity fields' values. The app should also contain a Button that when clicked, returns all fields to their original values. Use 5% for the tax rate. Shipping charges are $1.50 for up to 20 pairs of dice. If more than 20 pairs of dice are ordered, shipping is free. All fields must be filled out, and an item must be checked for the user to enter a quantity for that item.