printfn "%f" 3.14 * 90 / (180.0)
Standard input is empty
/home/sGDT3c/prog.fs(1,21): error FS0001: The type 'int' does not match the type 'unit' /home/sGDT3c/prog.fs(1,19): error FS0043: The type 'int' does not match the type 'unit'
Standard output is empty