Xiao Ming reads a storybook. If he reads 36 pages a day, he will finish it in 25 days. If he reads 45 pages a day, how many days will it take to finish it?
小明看一本故事书，如果每天看36页，25天看完，如果每天看45页，需几天看完呢？
<gadget id="calculator">25 / 45</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">36 * (5/9)</gadget>
<output>20</output>

<result>20</result>