In this first application you will create a simple calculator. The calculator will accept two terms in two

EditText views, five buttons to let the user choose the operation, and will output the solution of the

operation in a TextView.

The five operations are the following:

$$ Addition

$$ Subtraction

$$ Multiplication

$$ Division

$$ Modulo

The TextView should report an error if the user enters an invalid input $($such as $$hello$$ instead of a

number$)$ in the EditTexts.