a book. If you arrange 600 words per page, you need 80 pages. It is now decided to reduce the font size and add 200 characters per page. How many pages does this book have now?
一本书．如果每页排600个字，要80页．现决定缩小字号，每页多排200个字．现在这本书有多少页．
<gadget id="calculator">600 + 200</gadget>
<output>800</output>

<gadget id="calculator">80 / 800</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">600 * (1/10)</gadget>
<output>60</output>

<result>60</result>