A book has 300 pages, if you read (1/10) of the whole book on the first day, what page should you start reading on the second day.
一本书有300页，第一天读了全书的(1/10)，第二天应从第多少页开始读起．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">300 * (1/10)</gadget>
<output>30</output>

<gadget id="calculator">30 + 1</gadget>
<output>31</output>

<result>31</result>