Murat has decided to plant grapes in the garden behind his house. His neighbor Volkan has grown grapes successfully for a long time and has given Murat advice on how to plant vines. Volkan told him to plant them three meters aparts in rows that are also three meters apart. Murat has measured the size of his garden and learned that it's a rectangle with sides of 25 meters and 35 meters. How many vines should Murat buy?