How many movies have Ettore Scola and Furio Scarpelli collaborated on?

They have worked on 23 movies together! Their first movie together was Ridere! Ridere! Ridere! (1954) while their highest rated movie together was We All Loved Each Other So Much (1974). They have not worked together since A Bookshop in Paris (2021). They are most known for their comedy films together.