There is a flower bed in the school. (1/5) of it are chrysanthemums, (2/5) are roses, and the rest are roses. What percentage of the area of the entire flower bed is the area where roses are planted?
学校有一个花坛，它的(1/5)种菊花，(2/5)种月季花，剩下的种玫瑰．种玫瑰的面积占整个花坛面积的几分之几？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

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

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