Table:
text: 1999 Italian Grand Prix
Classification
Classification
Driver Constructor_ Laps Time_Retired Grid
Heinz-Harald Frentzen Jordan - Mugen-Honda 53 1:17:02.923 2
Ralf Schumacher Williams - Supertec 53 +3.272 5
Mika Salo Ferrari 53 +11.932 6
Rubens Barrichello Stewart - Ford 53 +17.630 7
David Coulthard McLaren - Mercedes 53 +18.142 3
Eddie Irvine Ferrari 53 +27.402 8
Alessandro Zanardi Williams - Supertec 53 +28.047 4
Jacques Villeneuve BAR - Supertec 53 +41.797 11
Jean Alesi Sauber - Petronas 53 +42.198 13
Damon Hill Jordan - Mugen-Honda 53 +56.259 9
Olivier Panis Prost - Peugeot 52 Engine 10
Johnny Herbert Stewart - Ford 40 Clutch 15
Toranosuke Takagi Arrows 35 Spun off 22

Question: What is the average starting grid in the 1999 Italian Grand Prix if the laps are over 53?

Question: What are the average laps driven by David Coulthard at the 1999 Italian Grand Prix?