CREATE TABLE "table1_18734298_1" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" text
);

Question: What is the title of the production code 1acx09?
SQL: SELECT "title" FROM "table1_18734298_1" WHERE "production_code"='1ACX09';

Question: How many series were directed by Rob Renzetti?
SQL: SELECT COUNT("no_in_series") FROM "table1_18734298_1" WHERE "directed_by"='Rob Renzetti';

Question: Who wrote the series number 14?
SQL: SELECT "written_by" FROM "table1_18734298_1" WHERE "no_in_series"=14;