Simplify the following text for a Grade 6 native English-speaking person.
Original: RuillÃ - Froid-Fonds is a commune in the Mayenne department in north-western France .
Simplified: RuillÃ - Froid-Fonds is a commune of 496 people ( 2005 ) . It is found in the region Pays de la Loire in the Mayenne department in the northwest of France .