This little program builds a static pure html calculator into the build folder. The calculations are limited to two two-digit numbers and an operator. Beware that every possible calculation has to be performed and written in a different .html file at buildtime. Because of this, expect the build folder to weigh hundreds of megabytes.
Warning: runs in non-linear space when using runhaskell. Compile it first.
A prebuilt version is available here.