The school librarian arranges a batch of books, and it takes 80 hours for one person to complete the work. Now it is planned that some people will do it for 8 hours first, and then add 2 people to work with them for 16 hours to complete this work. Assuming that these people have the same work efficiency, how many people should be scheduled to work for 8 hours?
学校图书管理员整理一批图书，由一个人做要80小时完成，现在计划由一部分人先做8小时，再增加2人和他们一起做16小时，完成这项工作．假设这些人的工作效率相同，具体应该先安排多少人工作8小时？
<result>2</result>