A rectangle has a perimeter of 270 meters and a length of 80 meters. What is the area of the rectangle in square meters?
一个长方形，周长是270米，长是80米，这个长方形的面积是多少平方米？
<gadget id="calculator">270 / 2</gadget>
<output>135</output>

<gadget id="calculator">135 - 80</gadget>
<output>55</output>

<gadget id="calculator">80 * 55</gadget>
<output>4_400</output>

<result>4_400</result>