A piece of land is only planted with eggplants and cucumbers, of which cucumbers account for (3/5), how much eggplants account for
一块地只种茄子和黄瓜，其中黄瓜占(3/5)，茄子占多少
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>