small carton with a length, width, and height of 40cm, 30cm, and 20cm respectively, stick a tape on all edges, at least how long is the tape?
一个长、宽、高分别为40cm、30cm、20cm的小纸盒，在所有的棱上粘一圈胶带，至少需要多长的胶带？
<gadget id="calculator">40 + 30 + 20</gadget>
<output>90</output>

<gadget id="calculator">90 * 4</gadget>
<output>360</output>

<result>360</result>