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 |
| --- | --- | --- | --- | --- |
| Jean-Pierre Beltoise | BRM | 80.0 | 2:26:55.3 | 4.0 |
| Jacky Ickx | Ferrari | 80.0 | + 38.2 | 2.0 |
| Emerson Fittipaldi | Lotus - Ford | 79.0 | + 1 Lap | 1.0 |
| Jackie Stewart | Tyrrell - Ford | 78.0 | + 2 Laps | 8.0 |
| Brian Redman | McLaren - Ford | 77.0 | + 3 Laps | 10.0 |
| Chris Amon | Matra | 77.0 | + 3 Laps | 6.0 |
| Andrea de Adamich | Surtees - Ford | 77.0 | + 3 Laps | 18.0 |
| Helmut Marko | BRM | 77.0 | + 3 Laps | 17.0 |
| Wilson Fittipaldi | Brabham - Ford | 77.0 | + 3 Laps | 21.0 |
| Rolf Stommelen | March - Ford | 77.0 | + 3 Laps | 25.0 |
| Ronnie Peterson | March - Ford | 76.0 | + 4 Laps | 15.0 |
| Graham Hill | Brabham - Ford | 76.0 | + 4 Laps | 20.0 |
| Mike Beuttler | March - Ford | 76.0 | + 4 Laps | 23.0 |
| Dave Walker | Lotus - Ford | 75.0 | + 5 Laps | 14.0 |
| Denny Hulme | McLaren - Ford | 74.0 | + 6 Laps | 7.0 |
| Niki Lauda | March - Ford | 74.0 | + 6 Laps | 22.0 |
| Carlos Pace | March - Ford | 72.0 | + 8 Laps | 24.0 |
| François Cevert | Tyrrell - Ford | 70.0 | Not Classified | 12.0 |
| Henri Pescarolo | March - Ford | 58.0 | Accident | 9.0 |
| Clay Regazzoni | Ferrari | 51.0 | Accident | 3.0 |
| Mike Hailwood | Surtees - Ford | 48.0 | Accident | 11.0 |
| Howden Ganley | BRM | 47.0 | Accident | 20.0 |
| Tim Schenken | Surtees - Ford | 31.0 | Accident | 13.0 |
| Peter Gethin | BRM | 27.0 | Accident | 5.0 |
| Reine Wisell | BRM | 16.0 | Engine | 16.0 |
Question:
How many laps have a Time/Retired of + 4 laps, and a Driver of graham hill?
Answer:
76.0