A story book has 240 pages. Xiaohua read 27% of the whole book on the first day and 23% of the whole book on the second day. How many pages are left?
一本故事书240页，小华第一天看了全书的27%，第二天看了全书的23%，还剩下多少页没有看？
<gadget id="calculator">27 / 100</gadget>
<output>27/100 = around 0.27</output>

<gadget id="calculator">23 / 100</gadget>
<output>23/100 = around 0.23</output>

<gadget id="calculator">(27/100) + (23/100)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">240 * (1/2)</gadget>
<output>120</output>

<gadget id="calculator">240 - 120</gadget>
<output>120</output>

<result>120</result>