Write a simple GUI calculator that will have buttons for each operation + - * /.   The user will enter  two numbers, hit the operator button and a a solution will will appear in the GUI box.

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Running Time of Application

The application has a feature called running time. It is one of the parameters for measuring its performance. It is written in a particular language and is designed to perform a specific task. Applications run in a specific environment. The execution of the business will depend on the application’s running time. It must be optimized in order to get the maximum benefits out of the application.