A parallelogram flower bed, the two adjacent sides are 3 meters and 4 meters respectively, what is its perimeter in meters?
一个平行四边形的花坛，相邻两条边分别是3米和4米，它的周长是多少米．
<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">7 * 2</gadget>
<output>14</output>

<result>14</result>