The area of a trapezoid is 324 square meters, the upper base is 14 meters, and the lower base is 22 meters. What is the height?
一个梯形的面积是324平方米，上底14米，下底22米，高是多少？
<gadget id="calculator">14 + 22</gadget>
<output>36</output>

<gadget id="calculator">2 / 36</gadget>
<output>1/18 = around 0.055556</output>

<gadget id="calculator">324 * (1/18)</gadget>
<output>18</output>

<result>18</result>