How many years has an engine of audi 3.6l turbo v8 and 1st as the rank with an audi r8r as the chassis?
CREATE TABLE "complete_american_le_mans_series_results" (
  "year" real,
  "entrant" text,
  "class" text,
  "chassis" text,
  "engine" text,
  "rank" text,
  "points" text
);
SELECT COUNT("year") FROM "complete_american_le_mans_series_results" WHERE "engine"='audi 3.6l turbo v8' AND "rank"='1st' AND "chassis"='audi r8r';