How much Total has Doubles of 45, and Doubles, II Class larger than 18?
CREATE TABLE "feast_days" (
  "date" real,
  "doubles_i_class" real,
  "doubles_ii_class" real,
  "greater_doubles" real,
  "doubles" real,
  "semidoubles" real,
  "total" real
);
SELECT COUNT("total") FROM "feast_days" WHERE "doubles"=45 AND "doubles_ii_class">18;