Li Xiaohong reads an 80-page story book. She reads (1/5) of the whole book on the first day and (1/4) of the whole book on the second day. How many pages are left?
李小红看一本80页的故事书，第一天看了全书的(1/5)，第二天看了全书的(1/4)．还剩多少页没看？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">80 * (1/5)</gadget>
<output>16</output>

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

<gadget id="calculator">80 * (1/4)</gadget>
<output>20</output>

<gadget id="calculator">16 + 20</gadget>
<output>36</output>

<gadget id="calculator">80 - 36</gadget>
<output>44</output>

<result>44</result>