Xiao Ming reads a book. On the first day, he reads 35 pages. On the second day, he reads (5/7) of the book on the first day. In two days, he reads (1/4) of this book. How many pages is this book?
小明看一本书，第一天看了35页，第二天看的相当于第一天的(5/7)，两天共看了这本书的(1/4)．这本书共多少页？
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">35 * (5/7)</gadget>
<output>25</output>

<gadget id="calculator">35 + 25</gadget>
<output>60</output>

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

<gadget id="calculator">60 / (1/4)</gadget>
<output>240</output>

<result>240</result>