A roughly trapezoidal windshield has an upper base of 132 cm, a lower base of 105 cm, and a height of 55 cm. What is the approximate area of this windshield?
一块近似梯形的挡风玻璃，上底132cm，下底105cm，高55cm．这块挡风玻璃的面积大约是多少？
<gadget id="calculator">132 + 105</gadget>
<output>237</output>

<gadget id="calculator">55 / 2</gadget>
<output>55/2 = around 27.5</output>

<gadget id="calculator">237 * (55/2)</gadget>
<output>13_035/2 = around 6_517.5</output>

<result>13_035/2 = around 6_517.5</result>