If the rating/share is 3.8/10, what is the total number of rating?
CREATE TABLE "season_1" (
  "num" real,
  "episode" text,
  "rating" text,
  "share" real,
  "rating_share_18_49" text,
  "viewers_millions" text,
  "rank_night" text
);
SELECT COUNT("rating") FROM "season_1" WHERE "rating_share_18_49"='3.8/10';