Xiaoli reads an 80-page story book, and reads (2/5) of the total pages on the first day. How many pages does Xiaoli have left?
小丽看一本80页的故事书，第一天看了总页数的(2/5)，小丽还剩多少页没看？
<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">80 * (3/5)</gadget>
<output>48</output>

<result>48</result>