A rectangular square with a length of 120 meters and a width of 45 meters; and a square square with a side length of 78 meters. Which of the two squares has the larger area? How many square meters is it?
一个长方形广场，长120米，宽45米；还有一个正方形广场，边长78米．两个广场相比，哪一个面积大？大多少平方米？
<gadget id="calculator">78 * 78</gadget>
<output>6_084</output>

<gadget id="calculator">120 * 45</gadget>
<output>5_400</output>

<gadget id="calculator">6_084 - 5_400</gadget>
<output>684</output>

<result>684</result>