Li Li reads a storybook. She read it in the first week (2/5), and how much of it is left?
李丽看一本故事书，第一周看了(2/5)，还剩几分之几没有看？
<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>

<result>3/5 = around 0.6</result>