Xiao Ming reads a story book. On the first day, he read half of the book and more than 5 pages. On the second day, he read half of the remaining pages and more than 5 pages. On the third day, he read 5 pages and just finished it. How many pages does this storybook have?
小明看一本故事书，第一天看了这本书的一半多5页，第二天又看了余下页数的一半多5页，第三天看了5页正好看完．这本故事书共有多少页？
<gadget id="calculator">5 + 5</gadget>
<output>10</output>

<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<gadget id="calculator">20 + 5</gadget>
<output>25</output>

<gadget id="calculator">25 * 2</gadget>
<output>50</output>

<result>50</result>