Xiaofang's house has a nursery against the wall. The length and width are 14 meters and 8 meters respectively. If bamboo fences are used to surround this rectangular nursery, how many meters of bamboo fences are needed at least?
小芳家有块靠墙的苗圃，长和宽分别是14米、8米．如果用竹篱笆围这个长方形苗圃，至少需要多少米竹篱笆？
<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<gadget id="calculator">14 + 16</gadget>
<output>30</output>

<result>30</result>