A rectangular flowerbed is 80 meters long and twice as long as it is wide. What is the circumference of the garden in meters?
有一个长方形的花圃，长80米，长是宽的2倍．这个花圃的周长是多少米？
<gadget id="calculator">80 / 2</gadget>
<output>40</output>

<gadget id="calculator">80 + 40</gadget>
<output>120</output>

<gadget id="calculator">120 * 2</gadget>
<output>240</output>

<result>240</result>