user: Question: What is the total number in the season for the #30 robert berlinger series?
Columns: ['No. in series', 'No. in season', 'Title', 'Directed By', 'Written By', 'Original air date']
Types: ['real', 'real', 'text', 'text', 'text', 'text']
Sample row: [23.0, 1.0, 'Slime and Punishment', 'Robert Berlinger', 'Tom Straw', 'September19,1992']
SQL:

assistant: SELECT SUM("No. in season") FROM "Table" WHERE "Directed By" = 'robert berlinger' AND "No. in series" = 30.0;