Phil has 10 books that are all 100 pages each. He moves to a new home and during the move, 2 books are lost. How many pages worth of books does Phil have left? Let's think first. Chain of thought:
Phil starts with 10 books and loses 2, for 10 - 2 = 8 books. Each of Phil's remaining books has 100 pages, so he has 8 * 100 = 800 pages worth of books.
Therefore, the answer is 800.