Xiaohong reads a 160-page extra-curricular book. She reads (1/4) of the whole book on the first day, and starts from the first page on the second day.
小红读一本160页的课外书，第一天读了全书的(1/4)，第二天从第多少页读起．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">160 * (1/4)</gadget>
<output>40</output>

<gadget id="calculator">40 + 1</gadget>
<output>41</output>

<result>41</result>