user: Question: What is the sum of Races, when Series is toyota racing series, and when Podiums is greater than 3?
Columns: ['Season', 'Series', 'Races', 'Wins', 'Poles', 'F/Laps', 'Podiums', 'Points', 'Position']
Types: ['text', 'text', 'real', 'real', 'real', 'real', 'real', 'real', 'text']
Sample row: ['2007', 'Formula First Manfeild Winter Series', 3.0, 0.0, 0.0, 1.0, 1.0, 170.0, '14th']
SQL:

assistant: SELECT SUM("Races") FROM "Table" WHERE "Series" = 'toyota racing series' AND "Podiums" > 3.0;