What is the lowest total number of children when there are more than 15.2% in child labour, less than 23.4% economically active, and the number economically active is 210,800?
CREATE TABLE "number_of_children_involved_in_ilo_categ" (
  "all_children_000s" real,
  "economically_active_children_000s" real,
  "economically_active_children_pct" real,
  "child_labour_000s" real,
  "child_labour_pct" real,
  "children_in_hazardous_work_000s" real,
  "children_in_hazardous_work_pct" real
);
SELECT MIN("all_children_000s") FROM "number_of_children_involved_in_ilo_categ" WHERE "child_labour_pct">15.2 AND "economically_active_children_pct"<23.4 AND "economically_active_children_000s"='210,800';