The upper and lower bases of the trapezoid are 1.5 meters and 3.5 meters respectively, and the height is 2 meters. What is the area of the trapezoid in square meters?
梯形的上底与下底分别是1.5米和3.5米，高是2米，这个梯形的面积是多少平方米．
<gadget id="calculator">1.5 + 3.5</gadget>
<output>5</output>

<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">5 * 1</gadget>
<output>5</output>

<result>5</result>