The length of the rectangle is (8/5) meters, which is 4 times the width. What is the area of the rectangle?
长方形的长是(8/5)米，是宽的4倍，长方形的面积是多少？
<gadget id="calculator">8 / 5</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">(8/5) / 4</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(8/5) * (2/5)</gadget>
<output>16/25 = around 0.64</output>

<result>16/25 = around 0.64</result>