title: How can I create a RESTful calculator?
body: <p>Given that RESTful web services are all based around the sacred idea that "everything is represented as resources and can be accessed by an address (URI)", this may make sense for CRUD applications (all examples are about listing/creating/updating/deleting entities). However, how about other business logic like, for example, creating a simple calculator RESTful service that has nothing to do with CRUD operations?
  What can be a good design for such a REST service?</p>
  
  <p>Secondly, what is the real advantage of using REST over SOAP if the logic of SOAP already makes complete sense?</p>