Obviously there is a book with a total of 400 pages. I read 35% of the whole book on the first day and (1/4) of the whole book on the second day. (Add a question of two or more steps before answering)
明明有一本书，共有400页，第一天看了全书的35%，第二天看了全书的(1/4)，(先补充一个两步或以上的问题再解答)
<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(7/20) + (1/4)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">400 * (3/5)</gadget>
<output>240</output>

<result>240</result>