The width of a rectangle is (2/5) meters, and the length is twice the width. What is the area of the rectangle?
一个长方形的宽是(2/5)米，长是宽的2倍，长方形的面积是多少？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) / 2</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(2/5) * (1/5)</gadget>
<output>2/25 = around 0.08</output>

<result>2/25 = around 0.08</result>