What sum lap grid 20?
Driver Constructor Laps Time/Retired Grid
1985 Dutch Grand Prix
1122933
text text real text real
2-1122933-2
Race
Race
Niki Lauda McLaren - TAG 70 1:32:29.263 10
Alain Prost McLaren - TAG 70 + 0.232 3
Ayrton Senna Lotus - Renault 70 + 48.491 4
Michele Alboreto Ferrari 70 + 48.837 16
Elio de Angelis Lotus - Renault 69 + 1 Lap 11
Nigel Mansell Williams - Honda 69 + 1 Lap 7
Martin Brundle Tyrrell - Renault 69 + 1 Lap 21
Nelson Piquet Brabham - BMW 69 + 1 Lap 1
Gerhard Berger Arrows - BMW 68 + 2 Laps 14
Marc Surer Brabham - BMW 65 Exhaust 9
Huub Rothengatter Osella - Alfa Romeo 56 Not Classified 26
Thierry Boutsen Arrows - BMW 54 Suspension 8
Philippe Alliot RAM - Hart 52 Engine 25
Stefan Bellof Tyrrell - Renault 39 Engine 22
Derek Warwick Renault 27 Gearbox 12
Andrea de Cesaris Ligier - Renault 25 Turbo 18
Patrick Tambay Renault 22 Transmission 6
Keke Rosberg Williams - Honda 20 Engine 2
Teo Fabi Toleman - Hart 18 Wheel Bearing 5
Jacques Laffite Ligier - Renault 17 Electrical 13
Jonathan Palmer Zakspeed 13 Oil Pressure 23
Piercarlo Ghinzani Toleman - Hart 12 Engine 15
Stefan Johansson Ferrari 9 Engine 17
Pierluigi Martini Minardi - Motori Moderni 1 Accident 24
Eddie Cheever Alfa Romeo 1 Turbo 20
Riccardo Patrese Alfa Romeo 1 Turbo 19
SELECT SUM Laps FROM table WHERE Grid = 20
20