What's the quantity preserved when the fleet number was 700?
CREATE TABLE "class_h_4_6_2" (
  "class" text,
  "wheel_arrangement" text,
  "fleet_number_s" text,
  "manufacturer" text,
  "year_made" text,
  "quantity_made" text,
  "quantity_preserved" text
);
SELECT "quantity_preserved" FROM "class_h_4_6_2" WHERE "fleet_number_s"='700';