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 |
| --- | --- | --- | --- | --- |
| Michael Schumacher | Benetton - Renault | 71 | 1:38:34.154 | 2 |
| David Coulthard | Williams - Renault | 71 | +11.060 | 3 |
| Gerhard Berger | Ferrari | 70 | +1 lap | 5 |
| Mika Häkkinen | McLaren - Mercedes | 70 | +1 lap | 7 |
| Jean Alesi | Ferrari | 70 | +1 lap | 6 |
| Mark Blundell | McLaren - Mercedes | 70 | +1 lap | 9 |
| Mika Salo | Tyrrell - Yamaha | 69 | +2 laps | 12 |
| Aguri Suzuki | Ligier - Mugen-Honda | 69 | +2 laps | 15 |
| Andrea Montermini | Pacific - Ford | 65 | +6 laps | 22 |
| Pedro Diniz | Forti - Ford | 64 | +7 laps | 25 |
| Gianni Morbidelli | Footwork - Hart | 62 | Engine | 13 |
| Taki Inoue | Footwork - Hart | 48 | Engine | 21 |
| Luca Badoer | Minardi - Ford | 47 | Engine | 18 |
| Roberto Moreno | Forti - Ford | 47 | Spun off | 23 |
| Karl Wendlinger | Sauber - Ford | 41 | Electrical | 19 |
| Damon Hill | Williams - Renault | 30 | Gearbox | 1 |
| Johnny Herbert | Benetton - Renault | 30 | Collision | 4 |
| Bertrand Gachot | Pacific - Ford | 23 | Gearbox | 20 |
| Rubens Barrichello | Jordan - Peugeot | 16 | Gearbox | 16 |
| Jos Verstappen | Simtek - Ford | 16 | Gearbox | 24 |
| Ukyo Katayama | Tyrrell - Yamaha | 15 | Spun off | 11 |
| Eddie Irvine | Jordan - Peugeot | 15 | Clutch | 8 |
| Domenico Schiattarella | Simtek - Ford | 12 | Steering | 26 |
| Heinz-Harald Frentzen | Sauber - Ford | 10 | Electrical | 14 |
| Olivier Panis | Ligier - Mugen-Honda | 0 | Collision | 10 |
| Pierluigi Martini | Minardi - Ford | 0 | Gearbox | 17 |
| Source: | Source: | Source: | Source: | Source: |
Question:
How many laps were there in grid 21?
Answer:
48.0