Xiao Ming reads a 240-page story book. He reads the whole book (3/8) on the first day and the rest (2/5) on the second day. How many pages are left?
小明看一本240页的故事书，第一天看了全书的(3/8)，第二天看了余下的(2/5)，还剩多少页没有看？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(5/8) * (2/5)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (3/8) - (1/4)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">240 * (3/8)</gadget>
<output>90</output>

<result>90</result>