Xiaohong reads a 120-page story book. She reads 1/3 of the whole book on the first day and 20% of the whole book on the second day. How many pages are left?
晓红看一本120页的故事书，第一天看了全书的(1/3)，第二天看了全书的20%．还剩多少页没看？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/3) - (1/5)</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">120 * (7/15)</gadget>
<output>56</output>

<result>56</result>