The sum of the upper and lower bases of a trapezoid is 16 centimeters, the area is 80 square centimeters, and the height is in centimeters.
一个梯形上下底之和是16厘米，面积是80平方厘米，高是多少厘米．
<gadget id="calculator">2 / 16</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">80 * (1/8)</gadget>
<output>10</output>

<result>10</result>