build app cost of product in wordpress

HI i want to build plugin about cost of product. Each distributor has different terms than what appears from a list price for example: Distributor 1 - Dollar exchange rate + 0.05 plus 10% discount Dollar Rate - 1 Dollar = 3.692 New Shekel - Round Up 3.7 List price of product $ 100 My price will be 3.7 + 0.05 = 3.75 3.75 * 100 * 0.9 = 337.5 to round up 338 NIS you can take the doolar rate from here - [login to view URL] Distributor 2 - The list price is in NIS, so no conversion is required 20% off the price of the price list in NIS without conversion. Distributor 3 - List price is in dollars The dollar price determined by the distributor is fixed and is NIS 4 I will explain in more detail that we will talk IMPORTENT!!! IMPORTENT!!! IMPORTENT!!! IMPORTENT!!! Work will ONLY!!! be done through remote control software like teamviewer or anydesk You should also have a microphone, do not make an offer if you are not willing to work with this method, I do not give the admin login information. Should be an excellent level in PHP, JQUERY, CSS, JS. thanks moses