What is the number of against when the difference is 10 and played is greater than 8?
CREATE TABLE "torneio_rio_s_o_paulo" (
  "position" real,
  "team" text,
  "points" real,
  "played" real,
  "against" real,
  "difference" text
);
SELECT COUNT("against") FROM "torneio_rio_s_o_paulo" WHERE "difference"='10' AND "played">8;