The upper base of a trapezoid is 25 cm, the lower base is 1.2 times the upper base, and the height is twice the lower base, what is their area in square centimeters?
一个梯形上底是25厘米，下底是上底的1.2倍，高是下底的2倍，它们面积是多少平方厘米．
<gadget id="calculator">25 * 1.2</gadget>
<output>30</output>

<gadget id="calculator">25 + 30</gadget>
<output>55</output>

<gadget id="calculator">30 * 2</gadget>
<output>60</output>

<gadget id="calculator">60 / 2</gadget>
<output>30</output>

<gadget id="calculator">55 * 30</gadget>
<output>1_650</output>

<result>1_650</result>