I need a calculator. It's a one page application, it doesn't require any backend. Everything is frontend. It's simple form with a few formulas that i will provide you the logic and the exact formulas. if I'm not mistaking it's only 2 formulas. take a look to this link [login to view URL] and if you are interested send me a message with the keyword i put on the document. if you don't send me the keyword you haven't read the requirements I posted on the link.