Undoubtedly, the standard format of sharing computations in the business world is the spreadsheet. But this quickly becomes unwieldy when complex algorithms are involved or deeply structured data are more appropriate for the problem at hand. So how to present the inner workings of an algorithm in such a way that it may be part of an invoice, to be checked by accountants? We advertise an idea that is actually as old as spreadsheets and show how, building on top of some popular Haskell packages, one can obtain an embedded domain-specific language for self-documenting computations.