Huanhuan reads a 240-page story book. She reads (1/3) of the whole book on the first day and (1/4) of the whole book on the second day. How many pages are left?
欢欢读一本240页的故事书，第1天读了全书的(1/3)，第二天读了全书的(1/4)，还剩多少页没有读？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">1 - (1/3) - (1/4)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">240 * (5/12)</gadget>
<output>100</output>

<result>100</result>