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In this problem, you will build a grade calculator GUI application. This application uses many elements in tkinter including Frames, Labels, Entry, and Buttons. This GUI application will accept three values from the user: The average grade of all the tests taken. The average grade of all the labs completed. e The average grade of all the exams taken. When the user hits the Calculate button, the program will calculate the overall average of the grades using the following weighting: Table 1: Grade Weighting for Activities in application. Activity Weighting Tests 20% Labs 30% Exams 50% When the user hits the Quit button, the program will exit. Here is what the application should roughly look like when it starts: Grade Calculator = Tests Grade: Labs Grade: Exams Grade: Grade Average: Calculate | Quit Here is a written version of the above graphic. e The application has a title bar with the title "Grade Calculator". e The first line has a Tests Grade label followed by a blank text field. e The second line has a Labs Grade label followed by a blank text field. e The third line has a Exams Grade label followed by a blank text field. e The fourth line has a Grade Average label followed by another label with dashes. e The fifth line has two buttons: A Calculate button and a Quit button