Table:
text: 1973 Brazilian Grand Prix
Classification
Classification
Driver Constructor_ Laps Time_Retired Grid
Emerson Fittipaldi Lotus - Ford 40 1:43:55.6 2
Jackie Stewart Tyrrell - Ford 40 + 13.5 8
Denny Hulme McLaren - Ford 40 + 1:46.4 5
Arturo Merzario Ferrari 39 + 1 Lap 17
Jacky Ickx Ferrari 39 + 1 Lap 3
Clay Regazzoni BRM 39 + 1 Lap 4
Howden Ganley Iso Marlboro - Ford 39 + 1 Lap 14
Niki Lauda BRM 38 + 2 Laps 13
Nanni Galli Iso Marlboro - Ford 38 + 2 Laps 18
François Cevert Tyrrell - Ford 38 + 2 Laps 9
Carlos Reutemann Brabham - Ford 38 + 2 Laps 7

Question: For the 1973 Brazilian Grand Prix, I want the average laps for a grid of 9?