What is the population of the place that has an area (km²) of 30,528, and a GDP (billion US$) larger than 58.316?
CREATE TABLE "foundation" (
  "member_countries" text,
  "population" real,
  "area_km" real,
  "gdp_billion_us" real,
  "gdp_per_capita_us" text
);
SELECT SUM("population") FROM "foundation" WHERE "area_km"='30,528' AND "gdp_billion_us">58.316;