Simplify the following text for a Grade 7 native English-speaking person.
Original: Barnes & Noble College Booksellers , Inc. , headquartered in Basking Ridge , NJ , is a subsidiary of the company which operates bookstores at more than 600 institutions of higher education .
Simplified: Barnes & Noble College Booksellers , Inc. , based in Basking Ridge , New Jersey , is a part of the company which operates bookstores at more than 600 colleges .