Table: tv_episodes_45
Columns: col
col_2
title
directed_by
written_by
original_air_date
production_code
u_s_viewers_million

Question: Who wrote the episode having a US viewership of 3.74 million?
SQL: SELECT "written_by" FROM tv_episodes_45 WHERE "u_s_viewers_million" = '3.74'

Question: Who directed production code 3x6116?
SQL: SELECT "directed_by" FROM tv_episodes_45 WHERE "production_code" = '3X6116'

Question: How many episode numbers had US viewership of 4.26 million?
SQL: SELECT COUNT("col") FROM tv_episodes_45 WHERE "u_s_viewers_million" = '4.26'

Question: What episode number had US viewership of 4.87 million?
SQL: SELECT "col" FROM tv_episodes_45 WHERE "u_s_viewers_million" = '4.87'

Question: How many episodes were directed by Ken Fink?
SQL: SELECT COUNT("col_2") FROM tv_episodes_45 WHERE "directed_by" = 'Ken Fink'