Mom made a piece of cake and cut it into 5 equal parts. Xiaoming ate (2/5). Dad ate more than Xiaoming. Dad ate ((())/(())) of this cake.
妈妈做了一张饼，切成了相等的5份，小明吃了(2/5)，爸爸比小明吃得多，爸爸吃了这张饼的((())/(()))．
<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>