What is the average population of the region with a density less than 487, a rank of 9, and an area larger than 377,944?
CREATE TABLE "with_population_above_10_million" (
  "rank" real,
  "country_region" text,
  "population" real,
  "area_km_2" real,
  "density_pop_per_km_2" real
);
SELECT AVG("population") FROM "with_population_above_10_million" WHERE "density_pop_per_km_2"<487 AND "rank"=9 AND "area_km_2">'377,944';