Android用のアプリ製作

I want to create a variable calculation android app. The image below is a rough image of the app. [login to view URL] Enter a number to 1,2, and select an operator. Then, the number of X is displayed on the 3. For example, 1 = 100,2 = 200, operator = + In this case 3 = 100. If you have any questions, please feel free. Thank you for reading to the end.