A rectangular flower bed is 6 meters long, and the length is three times the width. How many meters is it to walk around the flower bed in l circles?
长方形的花坛长6米，长是宽的3倍，绕花坛走l圈是多少米？
<gadget id="calculator">6 / 3</gadget>
<output>2</output>

<gadget id="calculator">2 + 6</gadget>
<output>8</output>

<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<result>16</result>