Lan Lan reads a story book, read 20 pages on the first day, read more (1/4) on the first day than on the second day, how many pages did she read on the second day.
兰兰看一本故事书，第一天看了20页，第一天比第二天多看了(1/4)，第二天看了多少页．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">20 / (5/4)</gadget>
<output>16</output>

<result>16</result>