There is a rectangular vegetable field, which is 120 meters long and 6 times as long as it is wide. If a fence is built around this vegetable field, how many meters is the minimum required for the fence?
有一块长方形菜地，长120米，长是宽的6倍，如果在这块菜地的四周围上篱笆，至少需要篱笆多少米？
<gadget id="calculator">120 / 6</gadget>
<output>20</output>

<gadget id="calculator">120 + 20</gadget>
<output>140</output>

<gadget id="calculator">140 * 2</gadget>
<output>280</output>

<result>280</result>