SELECT SUM(production_number) FROM table_name_18 WHERE director = "robert mckimson" AND series = "mm" AND title = "people are bunny"
Berapa nomor produksi yang disutradarai oleh Robert McKimson dalam seri MM berjudul People Are Bunny?
CREATE TABLE table_name_18 (production_number INTEGER, title VARCHAR, director VARCHAR, series VARCHAR)