The number of books on the bookshelf is between 110-150, among which (1/5) are science books and (1/7) are story books. How many books are there on the bookshelf?
书架上书的本数在110-150之间，其中(1/5)是科技书，(1/7)是故事书，书架上共有多少本书？
<result>140</result>