The area of a trapezoid is 48 square meters, the height is 12 meters, the upper base is 3.6 meters, and the lower base is how many meters.
一个梯形的面积是48平方米，高12米，上底是3.6米，下底是多少米．
<gadget id="calculator">2 / 12</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">48 * (1/6)</gadget>
<output>8</output>

<gadget id="calculator">8 - 3.6</gadget>
<output>4.4</output>

<result>4.4</result>