We require an online website application that is able to solve a wide range of mathematics.
There will also be a server side script to handle most of the calculations, probably php backed by suitable computer algebra system such as Scilab, mathematica, sagemath, matlab, maxima etc.
To give you a rough idea we are looking at something similar to mathway dot com
This is a complex project and requires substantial of knowledge in different areas, due to complexity the project should only be attempted in a team environment. You should prepare a comprehensive document outlining the exact technologies,platforms,structures and approach to create such application. Only bidders with document will be considered.