The length of a cuboid advertising light box is 5m, the width is 0.5m, and the height is 3m. The frame (edge) of the light box is inlaid with aluminum strips, how many meters of aluminum strips are needed at least?
一个长方体广告灯箱的长是5m，宽是0.5m，高是3m．灯箱的框架(棱)用铝条镶嵌，至少需要多少米铝条？
<gadget id="calculator">5 + 0.5 + 3</gadget>
<output>8.5</output>

<gadget id="calculator">8.5 * 4</gadget>
<output>34</output>

<result>34</result>