Xiao Yuchun reads a story book, reads 15 pages a day, and finishes it in 24 days; if he reads 3 more pages a day, how many days can he finish it.
小宇春看一本故事书，每天看15页，24天刚好看完；如果每天多看3页，多少天可以看完．
<gadget id="calculator">15 + 3</gadget>
<output>18</output>

<gadget id="calculator">24 / 18</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">15 * (4/3)</gadget>
<output>20</output>

<result>20</result>