What is the total number of overall draft picks for player whose position is C and was picked after round 9?
CREATE TABLE "1980_packers_draft_selections" (
  "round" real,
  "overall" real,
  "player" text,
  "position" text,
  "college" text
);
SELECT COUNT("overall") FROM "1980_packers_draft_selections" WHERE "position"='c' AND "round">9;