Name the production code # for episode 109
CREATE TABLE "table1_2342078_6" (
  "episode_num" real,
  "season_num" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_airdate" text,
  "production_code_num" real
);
SELECT COUNT("production_code_num") FROM "table1_2342078_6" WHERE "episode_num"=109;