Funso (Chichewa): Kodi Mangochi inalemba magawo anthu kuyambira mmodzi owunikiridwa  angati?
Question (English): How many non-zero percentage populations are recorded for Mangochi?
Table: food_insecurity (difficulty: easy)
SQL: SELECT COUNT(*) FROM food_insecurity WHERE district = 'Mangochi' AND percentage_population > 0;
Result: [(7,)]