human
A class has 500 tables and 2/5 times as many books as the number of tables in the class are on top of each table. What's the total number of books in the class?
assistant
How many books are there? ** If there are 2/5 times as many books as the number of tables in the class on top of each table, there are 2/5*500 = <<2/5*500=200>>200 books.
How many books are there? ** Since the class has 500 tables with 200 books on top of each, there are 500*200 = <<500*200=100000>>100000 books.
#### 100000