snail crawls along the side of a rectangle with a length of 14 cm and a width of 10 cm. How many cm does it have to climb to get back to the starting point?
一只蜗牛沿着一长14厘米，宽10厘米的长方形的边爬行，它要爬多少厘米才能回到起点？
<gadget id="calculator">14 + 10</gadget>
<output>24</output>

<gadget id="calculator">2 * 24</gadget>
<output>48</output>

<result>48</result>