Do you really need an ad-hoc program for such simple requirements? Probably a spreadsheet (excel or any free alternative) can handle it easily (damn, even a ca

Do you really need an ad-hoc program for such simple requirements? Probably a spreadsheet (excel or any free alternative) can handle it easily (damn, even a calculator and some paper is more than adeguate!). Want something free that can entertain your mind? do this with emacs and org-mode. Org's tables support formulas.