Xiao Ming reads a 240-page story book. He reads (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(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">240 * (3/8)</gadget>
<output>90</output>

<gadget id="calculator">240 - 90</gadget>
<output>150</output>

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

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">150 * (3/5)</gadget>
<output>90</output>

<result>90</result>