A rectangle has a perimeter of 11.6 meters and a length of 3.7 meters. What is the area of this rectangle in square meters.
一个长方形的周长是11.6米，长是3.7米．这个长方形的面积是多少平方米．
<gadget id="calculator">11.6 / 2</gadget>
<output>5.8</output>

<gadget id="calculator">5.8 - 3.7</gadget>
<output>2.1</output>

<gadget id="calculator">3.7 * 2.1</gadget>
<output>7.77</output>

<result>7.77</result>