There is a sunshade cloth on the rear window of a car, the upper base is 1m, the lower base is 1.2m, and the height is 0.7m. What is its area?
一辆汽车的后车窗有一块遮阳布，上底是1m，下底是1.2m，高0.7m，它的面积是多少？
<gadget id="calculator">1 + 1.2</gadget>
<output>2.2</output>

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

<gadget id="calculator">2.2 * 0.35</gadget>
<output>0.77</output>

<result>0.77</result>