The area of a trapezoid is 18.84 square meters, the sum of the upper and lower bases is 20 meters, what is the height of the trapezoid in meters.
一个梯形的面积是18.84平方米，上、下底的和是20米，梯形的高是多少米．
<gadget id="calculator">2 / 20</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">18.84 * (1/10)</gadget>
<output>1.884</output>

<result>1.884</result>