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:
| Position | Driver / Passenger | Equipment | Points | Wins | Second | Third |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | Daniël Willemsen / Reto Grütter | Zabel-VMC | 375 | 15 | — | — |
| 2 | Jan Hendrickx / Tim Smeuninx | Zabel-VMC | 286 | — | 2 | 7 |
| 3 | Kristers Sergis / Kaspars Stupelis | KTM-Mefo | 242 | 1 | 8 | 1 |
| 4 | Andy Burgler / Martin Betschart | KTM-VMC | 196 | — | — | 2 |
| 5 | Vaclav Rozehnal / Marek Rozehnal | Zabel-VMC | 191 | — | — | — |
| 6 | Maris Rupeiks / Haralds Kurpnieks | KTM-AYR | 184 | — | 4 | 1 |
| 7 | Marco Happich / Meinrad Schelbert | Zabel-VMC | 180 | — | 1 | 1 |
| 8 | Joris Hendrickx / Eli Piccart | KTM-AYR | 177 | — | — | 1 |
| 9 | Tomas Cermak / Ondrej Cermak | JAWA-Mefo | 153 | — | — | — |
| 10 | Janis Daiders / Lauris Daiders | KTM-AYR | 148 | — | — | — |
Question:
what was the number of races that daniel willemsen and reto grutter won?
Answer:
15