The sum of the upper and lower bases of a trapezoid is 2 meters, and the height is (4/5) meters. What is the area of the trapezoid in square meters?
一个梯形上底与下底的和是2米，高(4/5)米，这个梯形的面积是多少平方米
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

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

<gadget id="calculator">2 * (2/5)</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>