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QUESTION
produce a program with two classes.
produce a program with two classes. First class called Calcllastname should include the readinput and the writeoutput methods along with 4 methods for addition, subtraction, multiplication, and division.
The second class Called CalclastnameDemo.In this class all the methods from the Calclastname will called.
Submit Calclname under Calculator and submit CalcDemolastname under Calculator Demo
