This project is ideal for those with (or with access) to financial math EXPERTS who can provide the serious math that is behind the project calculation-engine.
I am looking for a Java or Visual Basic code caluclation engine or other solution that can be integrated into a request to a server. The client provides the server with all of the inputs less unknowns. The server solution (code) caluclates and solves for the unknowns.
I would prefer a solution that can 'take an XML call' and then return the results by XML to the client web-page.
You can check out a screenshot of an old DOS calculator I found (attached) that has most of the variables that may or not be inputed including: discount-rate, amount to be financed, step-lease payments, amount-to-broker, term, term options and other variables. If you are bidding on this project you already understand the variables and approach by viewing this sample screenshot.
The calculator needs to be able to find for multiple unknowns (if possible) - certainly for at least multiple step-lease unknown payments. It needs to solve for up to 20 unknown multiple payments (with some known). For monthly, quarterly and yearly lease payment calculations.
The project would require that you build a basic html page for client input of the variables.
I require all source code and documentation for this project.
I am open to suggestions.