Zhang Yang read a popular science book, read (1/3) of this book in the first week, read 160 pages in the second week, and did not read the remaining (2/5) of this book. This popular science book has a total of how many pages
张阳读一本科普书，第一周读了这本书的(1/3)，第二周读了160页，剩下这本书的(2/5)没有读，这本科普书共有多少页？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (1/3) - (2/5)</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">160 / (4/15)</gadget>
<output>600</output>

<result>600</result>