Prompted to select text containing numerical data then either choose an arithmetical operation or place the result of the current calculation in the form of an  MText , Text & Dimensions object in the cad drawing. 
Upload lisp  (see how to upload the lisp in cad file seee more lisp) flow the following  instructions

1- Type TC or Text calc in command line
2- Hit Enter Key
3- Select Text Containing Numerical Data
4- Select  Second Text Containing Numerical Data (you can select more than 2)
5- Specify Point for Result
See how it will work and download =>


autocad lsip

Author: Lee Mac, Copyright © 2011 -