The front windshield of a car is a trapezoid, the upper base is 1.2m, the lower base is 1.6m, and the height is 0.8m. If the glass costs 300 yuan per square meter, how much is the windshield?
一辆汽车的前挡风玻璃是一个梯形，上底是1.2m，下底是1.6m，高0.8m，如果每平方米玻璃要300元，买这块挡风玻璃要多少元？
<gadget id="calculator">1.2 + 1.6</gadget>
<output>2.8</output>

<gadget id="calculator">0.8 / 2</gadget>
<output>0.4</output>

<gadget id="calculator">2.8 * 0.4 * 300</gadget>
<output>336</output>

<result>336</result>