CREATE TABLE table_73320 ("No." FLOAT, "#" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "U.S. viewers  ( million ) " CLOB, "Original air date" CLOB, "Production code" FLOAT)

How many times did episode 6 originally air?
SELECT COUNT("Original air date") FROM table_73320 WHERE "#" = '6'
SELECT COUNT("Original air date") FROM "table_73320" WHERE "#" = '6'