How many fast laps are in 6 races with 30 points in the World Series by Nissan?
CREATE TABLE table_67180 (
    "Season" text,
    "Series" text,
    "Team" text,
    "Races" text,
    "wins" text,
    "Fast laps" text,
    "Points" text,
    "Pos." text
)
SELECT "Fast laps" FROM table_67180 WHERE "Series" = 'world series by nissan' AND "Races" = '6' AND "Points" = '30'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: How many fast laps are in 6 races with 30 points in the World Series by Nissan? ### Input: CREATE TABLE table_67180 (
    "Season" text,
    "Series" text,
    "Team" text,
    "Races" text,
    "wins" text,
    "Fast laps" text,
    "Points" text,
    "Pos." text
) ### Response: SELECT "Fast laps" FROM table_67180 WHERE "Series" = 'world series by nissan' AND "Races" = '6' AND "Points" = '30'