How many dates have a total points for race of 180?
CREATE TABLE "2008_season" (
  "sf_round" real,
  "country" text,
  "location" text,
  "date" text,
  "driver" text,
  "race_1_pts" real,
  "race_2_pts" real,
  "race_total_pts" real
);
SELECT COUNT("date") FROM "2008_season" WHERE "race_total_pts"=180;