This question was asked on the old forum. As one contributor said, the easiest way would involve coding.

https://alpha.inkscape.org/vectors/www.inkscapeforum.com/viewtopic7d03.html?t=19264

This could be an occasion to introduce tikz, a tool for creating graphic elements within the typesetting application LaTeX: https://fr.overleaf.com/learn/latex/TikZ_package

I've attached an example, together with another to colour in. The coding is a bit forbidding for occasional users like me, but I've annotated it to make modifications reasonably easy without knowing the syntax. The .tex files are plain text. One way to run the code is to take out a free subscription to Overleaf (link above). Otherwise you can install TexLive, followed possibly by installing an alternative editor such as TeXstudio. The code compiles to a pdf file which can be imported directly into Inkscape.

Plenty of tikz examples can be found on the web,  including some made with the interesting calendar macro-package. Mathematical formulae are handled within LaTex. Inkscape has a Render extension for maths that uses LaTeX, but I haven't found information of connecting to LaTeX more generally. Scribus also has a LaTeX render frame, which allows you to include perfectly-typeset blocks of text. To be of wider use, these powerful facilities probably need only some less succinct documentation.

Finally, to complete the answer to the question, alternatives to tikz would be a macro written for Scribus, and Processing, which is the precursor, mainly but not exclusively for graphics artists, of the now more famous Arduino.