This is awesome! I have used LibreOffice (and Open Office) extensively for decades now. It is my real office suite I use for real work and real business accounting tasks. Yes, I am very well aware that Calc is different than Excel but it can get nearly all the same tasks done as long as you are not tied deep into a corporate environment passing Excel-specific files around. I have also made great business uses of it in Docker too, generating perfect PDFS from templates, and normalizing document formats for analysis. I donate a modest $19/month personally to the foundation, much rather pay them than Microsoft!