Xiao Ming reads a storybook. He reads 15 pages on the first day and 20 pages on the second day. The number of pages read in two days is just 7/25 of the whole book. How many pages does this storybook have?
小明看一本故事书，第一天看了15页，第二天看了20页，两天看的页数正好占全书的(7/25)，这本故事书共有多少页？
<gadget id="calculator">15 + 20</gadget>
<output>35</output>

<gadget id="calculator">7 / 25</gadget>
<output>7/25 = around 0.28</output>

<gadget id="calculator">35 / (7/25)</gadget>
<output>125</output>

<result>125</result>