Table: tv_episode_data_20
Columns: episode
broadcast_date
run_time
viewers_in_millions
archive

Question: When there are  7.4 million viewers how many episodes are there?
SQL: SELECT COUNT("episode") FROM tv_episode_data_20 WHERE "viewers_in_millions" = '7.4'

Question: When 24:31 is the run time how many measurements of viewers (in millions) are there?
SQL: SELECT COUNT("viewers_in_millions") FROM tv_episode_data_20 WHERE "run_time" = '24:31'

Question: When 24:31 is the run time how many millions of viewers are there?
SQL: SELECT "viewers_in_millions" FROM tv_episode_data_20 WHERE "run_time" = '24:31'

Question: When there are 7.5 million viewers what is the archive?
SQL: SELECT "archive" FROM tv_episode_data_20 WHERE "viewers_in_millions" = '7.5'