During a school anniversary parade, contestants were required to line along both sides of the corridor to welcome the Guest-Of-Honor from the Foyer to the Hall. On the left row, the girls would stand at an equal distance apart. On the right row, the boys would stand 7 m apart from each other. Both rows would have a girl and a boy standing at the beginning and at the end of the corridor. The corridor was 119 m long. If there were a total of 125 contestants, how many girls were there?
