For a book, Wang Dong reads 15 pages a day and can finish it in 16 days. If he reads 24 pages a day, how many days can he read it?
一本书，王冬每天看15页，16天可以看完，如果每天看24页，可以看多少天．
<gadget id="calculator">16 / 24</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">15 * (2/3)</gadget>
<output>10</output>

<result>10</result>