How many million viewers watched episodes prior to episode 2.0?
CREATE TABLE "table1_27927185_1" (
  "episode_num" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "originalairdate" text,
  "viewers_millions" text
);
SELECT "viewers_millions" FROM "table1_27927185_1" WHERE "episode_num"<2.0;