Xiaohua reads a storybook. On the first day, she reads 60 pages, which is 25% less than the second day. The number of pages she reads on the second day is exactly 25% of the whole book. How many pages does this storybook have?
小华看一本故事书，第一天看了60页，比第二天少看了25%，第二天看的页数正好是全书的25%，这本故事书共有多少页？
<gadget id="calculator">25 / 100</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) / (1/4)</gadget>
<output>320</output>

<result>320</result>