user: Question: How many laps were there when time/retired was Gearbox?
Columns: ['Driver', 'Constructor', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Jim Clark', 'Lotus - Climax', 40.0, '2:41:38.4', 1.0]
SQL:

assistant: SELECT SUM("Laps") FROM "Table" WHERE "Time/Retired" = 'Gearbox';