Xiaohong reads a 160-page story book. She reads (2/5) of the whole book on the first day and (3/8) of the whole book on the second day. How many pages are left?
小红看一本160页的故事书，第一天看了全书的(2/5)，第二天看了全书的(3/8)，还剩多少页没有看？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(2/5) + (3/8)</gadget>
<output>31/40 = around 0.775</output>

<gadget id="calculator">1 - (31/40)</gadget>
<output>9/40 = around 0.225</output>

<gadget id="calculator">160 * (9/40)</gadget>
<output>36</output>

<result>36</result>