What is the average square kilometer area of the division that has a 2,448 square mile area and a national share larger than 0.065%?
CREATE TABLE "notes" (
  "rank" text,
  "administrative_division" text,
  "area_km" real,
  "area_sq_mi" real,
  "national_share_pct" real,
  "comparable_country" text
);
SELECT AVG("area_km") FROM "notes" WHERE "area_sq_mi"='2,448' AND "national_share_pct">0.065;