user: Question: how many wins had series Formula Renault 2.0 NEC and the position is 18th?
Columns: ['Season', 'Series', 'Team', 'Races', 'Wins', 'Poles', 'F/Laps', 'Podiums', 'Points', 'Position']
Types: ['real', 'text', 'text', 'real', 'real', 'real', 'real', 'real', 'real', 'text']
Sample row: [2008.0, 'Formula Renault 2.0 NEC', 'Van Amersfoort Racing', 15.0, 0.0, 0.0, 0.0, 0.0, 120.0, '12th']
SQL:

assistant: SELECT SUM("Wins") FROM "Table" WHERE "Series" = 'Formula Renault 2.0 NEC' AND "Position" = '18th';