A trapezoid has an upper base of 1.2m, a lower base of 1.6m, and a height of 0.7m. What is its area in m**2?
一个梯形，上底是1.2m，下底是1.6m，高0.7m，它的面积是多少m**2．
<gadget id="calculator">1.2 + 1.6</gadget>
<output>2.8</output>

<gadget id="calculator">0.7 / 2</gadget>
<output>0.35</output>

<gadget id="calculator">2.8 * 0.35</gadget>
<output>0.98</output>

<result>0.98</result>