Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Driver | Constructor | Laps | Time/Retired | Grid |
| --- | --- | --- | --- | --- |
| Ralf Schumacher | Williams - BMW | 56.0 | 1:34:12.912 | 4.0 |
| Juan Pablo Montoya | Williams - BMW | 56.0 | +39.700 | 2.0 |
| Michael Schumacher | Ferrari | 56.0 | +1:01.795 | 1.0 |
| Jenson Button | Renault | 56.0 | +1:09.767 | 8.0 |
| Nick Heidfeld | Sauber - Petronas | 55.0 | +1 Lap | 7.0 |
| Felipe Massa | Sauber - Petronas | 55.0 | +1 Lap | 14.0 |
| Allan McNish | Toyota | 55.0 | +1 Lap | 19.0 |
| Jacques Villeneuve | BAR - Honda | 55.0 | +1 Lap | 13.0 |
| Takuma Sato | Jordan - Honda | 54.0 | +2 Laps | 15.0 |
| Pedro de la Rosa | Jaguar - Cosworth | 54.0 | +2 Laps | 17.0 |
| Heinz-Harald Frentzen | Arrows - Cosworth | 54.0 | +2 Laps | 11.0 |
| Mika Salo | Toyota | 53.0 | +3 Laps | 10.0 |
| Giancarlo Fisichella | Jordan - Honda | 53.0 | +3 Laps | 9.0 |
| Rubens Barrichello | Ferrari | 39.0 | Engine | 3.0 |
| Mark Webber | Minardi - Asiatech | 34.0 | Electrical | 21.0 |
| Eddie Irvine | Jaguar - Cosworth | 30.0 | Hydraulics | 20.0 |
| Alex Yoong | Minardi - Asiatech | 29.0 | Gearbox | 22.0 |
| Kimi Räikkönen | McLaren - Mercedes | 24.0 | Engine | 5.0 |
| Enrique Bernoldi | Arrows - Cosworth | 20.0 | Fuel Pressure | 16.0 |
| David Coulthard | McLaren - Mercedes | 15.0 | Engine | 6.0 |
| Olivier Panis | BAR - Honda | 9.0 | Clutch | 18.0 |
| Jarno Trulli | Renault | 9.0 | Overheating | 12.0 |
Question:
What is the average number of laps for grid 8?
Answer:
56.0