When the Away team had a score of 11.16 (82), what is the average Crowd?
CREATE TABLE "round_18" (
  "home_team" text,
  "home_team_score" text,
  "away_team" text,
  "away_team_score" text,
  "venue" text,
  "crowd" real,
  "date" text
);
SELECT AVG("crowd") FROM "round_18" WHERE "away_team_score"='11.16 (82)';