There are 45 science and technology books on the bookshelf of Lili’s house, which is equivalent to (5/8) of literary books, and the number of literary books is equivalent to (3/8) of all books. books?
丽丽家的书架上有科技书45册，相当于文艺书的(5/8)，文艺书的册数又相当于全部图书册数的(3/8)，丽丽家的书架上共有多少册书？
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">45 / (5/8) / (3/8)</gadget>
<output>192</output>

<result>192</result>