How many attended the game against the sharks with over 86 points?
CREATE TABLE "regular_season" (
  "date" text,
  "opponent" text,
  "score" text,
  "loss" text,
  "attendance" real,
  "record" text,
  "arena" text,
  "points" real
);
SELECT AVG("attendance") FROM "regular_season" WHERE "points">86 AND "opponent"='sharks';