CREATE TABLE table_24446718_3 (awardee_s_ VARCHAR, name_of_award VARCHAR)

Name the total number of awardees for best screenplay
SELECT COUNT(awardee_s_) FROM table_24446718_3 WHERE name_of_award = "Best Screenplay"
SELECT COUNT("awardee_s_") FROM "table_24446718_3" WHERE "Best Screenplay" = "name_of_award"