A story book has 240 pages, which is 25% less than a technical book. How many pages is this technical book?
一本故事书有240页，比一本科技书少25%，这本科技书是多少页．
<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">240 / (3/4)</gadget>
<output>320</output>

<result>320</result>