Divide a piece of land into 5 parts on average, use 2 of them to grow peppers, and the rest to grow cucumbers, how much of the land is occupied by cucumbers?
把一块地平均分成5份，用其中的2份种了辣椒，其余的种了黄瓜，黄瓜地占了这块地的多少．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) * 2</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>