What was the average week of a game with a result of l 10-7 attended by 37,500?
CREATE TABLE "schedule" (
  "week" real,
  "date" text,
  "opponent" text,
  "result" text,
  "attendance" real
);
SELECT AVG("week") FROM "schedule" WHERE "result"='l 10-7' AND "attendance"<'37,500';