A plate of apples eats its (2/5), and the rest is the amount of this plate of apples.
一盘苹果吃了它的(2/5)，剩下的是这盘苹果的多少．
<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>