1. Setup a folder for CPAN module development with the necessary files and copy the examples/perl/lib/MyTools.pm files to be your module.
  2. Create a test script (.pl) and write at least 5 tests for the multiply() function. See how it works when running directly with perl and using harness
  3. Rename the file and move it to t/sg.t Run it using make test and/or Build test