A and B read a book each, and the two books have the same number of pages. When A has read (1/3), B has 60 pages left; when A has read the remaining half of the pages, B has read exactly half of the book. How many pages does this book have?
甲乙各读一本书，两本书页数相同，甲读了(1/3)时，乙还剩60页；甲又看了所剩一半页数时，乙正好看了全书的一半．这本书共有多少页？
<gadget id="calculator">1 / 4</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>