user: Question: at most what number in the series was the episode "Chet Episode"?
Columns: ['Series no.', 'Season no.', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code', 'U.S. viewers (millions)']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: [18.0, 1.0, '"Run, Dr. Lola Spratt, Run"', 'Rob Schrab', 'Rob Corddry', 'June2,2011', 301.0, '1.54']
SQL:

assistant: SELECT MAX("Series no.") FROM "Table" WHERE "Title" = '"Chet Episode"';