Simplify the following text for a Grade 6 native English-speaking person.
Original: La Chapelle-au-Riboul is a commune in the Mayenne department and Pays de la Loire region of France .
Simplified: La Chapelle-au-Riboul is a commune of 448 people ( 1999 ) . It is found in the region Pays de la Loire in the Mayenne department in the northwest of France .