There are about 100--130 books on Wang Hong's bookshelf, among which (5/9) are science books and (1/4) are story books. How many books are there on the bookshelf?
王红同学的书架上书本大约在100--130本之间，其中有(5/9)是科技书，(1/4)是故事书，书架上放多少本书．
<gadget id="calculator">9 * 4</gadget>
<output>36</output>

<gadget id="calculator">36 * 3</gadget>
<output>108</output>

<result>108</result>