user: Question: what is the total viewers where the date of first broadcast is 28 January 2010 and the episode number is 1?
Columns: ['Series number', 'Episode number', 'Date of first broadcast', 'Total viewers', 'Series average']
Types: ['text', 'real', 'text', 'real', 'real']
Sample row: ['Series 1', 1.0, '27 September 2007', 1997000.0, 1242125.0]
SQL:

assistant: SELECT "Total viewers" FROM "Table" WHERE "Date of first broadcast" = '28 January 2010' AND "Episode number" = 1.0;