Code a calculation form for a website, based on an excel form

With this job I need you to create a calculation form based on the excel sheet attached here. As you can see, when you click a field, such as the "Per Unit" "15.0" field, a drop down menu becomes available. Depending on what you choose from the drop down, the "Total Project" calculation changes. Some fields are just direct entry. Others offer drop down choices. I need you to turn this into an html page. I need it to have a transparent background so that we can put a graphic behind it. At the bottom of the form I need a button that says "Finished Calculating, Generate PDF" I need this button to then generate the final calculation in a PDF, email it to the user, and also store a copy of the PDF online in a folder. Let me know if you have any questions. Thank you. NOTE: I only need the first sheet converted - the one marked "Summery with Financial Info". Thank you.