A trapezoid has an upper base of 5 cm, a lower base of 7 cm, and a height of 2.4 cm. If one of the largest parallelograms is cut from this trapezoid, what is the remaining area in square centimeters?
一个梯形上底5厘米，下底7厘米，高2.4厘米．如果在这个梯形中剪去一个最大的平行四边形，剩下的面积是多少平方厘米？
<gadget id="calculator">7 - 5</gadget>
<output>2</output>

<gadget id="calculator">2.4 / 2</gadget>
<output>1.2</output>

<gadget id="calculator">2 * 1.2</gadget>
<output>2.4</output>

<result>2.4</result>