The area of a trapezoid is 6.3m**2, the height is 1.5m, the upper base is 2.4m, and the lower base is how many meters
一个梯形的面积是6.3m**2，高是1.5m，上底是2.4m，下底是多少m
<gadget id="calculator">1.5 / 2</gadget>
<output>0.75</output>

<gadget id="calculator">2.4 * 0.75</gadget>
<output>1.8</output>

<gadget id="calculator">6.3 - 1.8</gadget>
<output>4.5</output>

<gadget id="calculator">4.5 / 0.75</gadget>
<output>6</output>

<result>6</result>