If the average is 45.65, what is the total number of innings?
CREATE TABLE "most_career_runs" (
  "rank" real,
  "runs" real,
  "player" text,
  "matches" real,
  "innings" real,
  "not_out" real,
  "average" text
);
SELECT COUNT("innings") FROM "most_career_runs" WHERE "average"='45.65';