If you have time and would like to test to help make it better, I would appreciate some help.
The calculator will add, subtract, divide, and multiply. It will also work with cosine, tangent, and sine - enter the degrees in degrees not radians. It will not work on dimension text that is not exploded.
The project is password protected at this time. When I feel the project is as complete as I can get it, I will post an unprotected project.
Note: you must press the = command button to get the text processed, Pick the next Item command button until it says exit to update the drawing.