Complete a Calculator program. The program should allow the user to enter numbers into two textboxes on the first page. Two buttons should be available: a button to add the numbers and a button to multiply the numbers. When pressed, the sum or product should be displayed in

a third textbox. If the answer is less than zero, display it in red. A third button should be used to set all the textboxes to zero. Use Microsoft Expression Blend from within Visual Studio to enhance the look of the buttons. Create a fourth button to navigate to a second page. The second page should only contain a textbox with the word goodbye and a button to return to the main calculator page. Visual studio XAML C# required