The area of a trapezoid is 22.8 square centimeters, the height is 6 centimeters, the upper base is 1.8 cm, and the lower base is how many centimeters.
一个梯形飞面积是22.8平方厘米，高是6厘米，上底是1.8厘米，下底是多少厘米．
<gadget id="calculator">2 / 6</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">22.8 * (1/3)</gadget>
<output>7.6</output>

<gadget id="calculator">7.6 - 1.8</gadget>
<output>5.8</output>

<result>5.8</result>