What was the sum of the population in 2010 for the division of japeri with an area of 82.9 squared km?
CREATE TABLE "municipalities" (
  "administrative_division" text,
  "area_km" real,
  "population_2000_census" real,
  "population_2010_census" real,
  "population_density_2010_km" real
);
SELECT SUM("population_2010_census") FROM "municipalities" WHERE "administrative_division"='japeri' AND "area_km"<82.9;