If the population density is 7,447.32, what is the population total number?
CREATE TABLE "political" (
  "city_municipality" text,
  "no_of_barangays" real,
  "area_km" text,
  "population_2010_census" real,
  "pop_density_per_km" text
);
SELECT COUNT("population_2010_census") FROM "political" WHERE "pop_density_per_km"='7,447.32';