Which Total has an FA Cup goals of 1, and a League goals of 4 + 7?
CREATE TABLE "fourth_division" (
  "club" text,
  "league_goals" text,
  "fa_cup_goals" text,
  "league_cup_goals" text,
  "total" real
);
SELECT AVG("total") FROM "fourth_division" WHERE "fa_cup_goals"='1' AND "league_goals"='4 + 7';