To greet the "May 1st" International Labor Day, our school will install colored lights around the trade union club (not around the ground). It is known that the trade union club is 40 meters long, 30 meters wide and 20 meters high. What is the minimum length of the lantern wire?
迎接"五一"国际劳动节，我们学校要在工会的俱乐部的四周装上彩灯(地面的四周不装)．已知工会俱乐部长40米，宽30米，高20米．至少需要多长的彩灯线呢？
<gadget id="calculator">40 * 2</gadget>
<output>80</output>

<gadget id="calculator">30 * 2</gadget>
<output>60</output>

<gadget id="calculator">20 * 4</gadget>
<output>80</output>

<gadget id="calculator">80 + 60 + 80</gadget>
<output>220</output>

<result>220</result>