Xiaohong reads a story book, reads (1/4) of the book on the first day, and reads 15% of the book on the second day, leaving 96 pages unread. How many pages does this book have?
小红看一本故事书，第一天看了这本书的(1/4)，第二天看了这本书的15%，还剩下96页没看．这本书有多少页？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 - (1/4) - (3/20)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">96 / (3/5)</gadget>
<output>160</output>

<result>160</result>