Check out this paper from my friend Ronen, and Prof. Fateman, putting Lisp into Excel:
"A paper written with Ronen Gradwohl on Lisp and Symbolic Functionality in an Excel Spreadsheet: Development of an OLE Scientific Computing Environment, August, 2002. (code available on request) "
"A paper written with Ronen Gradwohl on Lisp and Symbolic Functionality in an Excel Spreadsheet: Development of an OLE Scientific Computing Environment, August, 2002. (code available on request) "
https://people.eecs.berkeley.edu/~fateman/algebra.html