Xiaohong has a technical book with 120 pages in total. She reads 1/5 of the whole book on the first day and 25% of the whole book on the second day. How many pages are left?
小红有本科技书共120页，第一天看了全书的(1/5)，第二天看了全书的25%，还剩多少页没看？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/5) + (1/4)</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">120 * (9/20)</gadget>
<output>54</output>

<gadget id="calculator">120 - 54</gadget>
<output>66</output>

<result>66</result>