Exercises: Multiply numbers

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• Write a script with a function to multiply numbers sub multiply.
• Once it is ready move the multiply subroutine to the library.pl file that already has the add subroutine and write a script that can use it.
• Create a package called Exercise::Calc that will export the multiply function. Write a script that will use this module and the given functions.
• Write a few test cases for both the add and multiply functions. Including test cases where you try to add 3 or more numbers. As the tests are failing, mark them as TODO.
• Fix the add() function so it passes its new tests with 3 or more parameters.
• Add short user documentation that can be read by perldoc.
• Create the files necessary for distributions and make sure you can generate the tar.gz file.