$150 Need HTML Calculator Made.

I will supply video to awarded bidder that explains what I need. I need it completed in 5 days. Must be made in HTML, can use open source code Laravel 5.5.2 Do not use any other open source code unless approved by me. Must be 100% original. You must have the skills to build what I need and send me your best samples of calculators you have built. I need the calculator to be packaged in an html file that can be loaded onto my server and the users can access and use the program by clicking on a hyperlink to open and use the program. It must work on iPad Air Generation 4, and windows laptops. It must work on Safari browser and Chrome browser. You will need to put the program onto a server for me to test it. You will need to sign my NDA Non-Disclosure Agreement before I give full details of my project. I will own the full copyrights to the software and you will send me the program. I will own the source code and you will send me the full source code.