Xiaoli reads a book, she reads 25% on the first day, and 35 pages on the second day, leaving 25 pages unread. How many pages does this book have?
小丽读一本书，第一天读了25%，第二天读了35页，还剩下25页没有读．这本书一共有多少页？
<gadget id="calculator">35 + 25</gadget>
<output>60</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">60 / (3/4)</gadget>
<output>80</output>

<result>80</result>