That is an interesting suggestion, Ludo. We have not had this request so far. We do not have a calculator control in our suite yet, but I logged it in our system.
We will appreciate the community's involvement here - are you guys in need of a calculator in your applications? Do you think that this control will add value to our suite? In case we get high interest in this control, we will provide an example of a calculator in a combo.
Thank you for your feedback.
All the best,
the Telerik team