How many 7th season episodes had 2nd season viewerships of 6 594 469?
CREATE TABLE table_30536 (
    "Episode" real,
    "1st season" text,
    "2nd season" text,
    "3rd season" text,
    "4th season" text,
    "5th season" text,
    "6th season" text,
    "7th season" text
)
SELECT COUNT("7th season") FROM table_30536 WHERE "2nd season" = '6 594 469'
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 7th season episodes had 2nd season viewerships of 6 594 469? ### Input: CREATE TABLE table_30536 (
    "Episode" real,
    "1st season" text,
    "2nd season" text,
    "3rd season" text,
    "4th season" text,
    "5th season" text,
    "6th season" text,
    "7th season" text
) ### Response: SELECT COUNT("7th season") FROM table_30536 WHERE "2nd season" = '6 594 469'