Haskell Program to divide two numbers

Program

main = do
 let a = 12
 let b = 4
 putStrLn "Division of two numbers"
 print (a / b)

Output

$ ghc divide_two_numbers.hs 
[1 of 1] Compiling Main             ( divide_two_numbers.hs, divide_two_numbers.o )
Linking divide_two_numbers ...
$ ./divide_two_numbers 
Division of two numbers
3.0