There are 58 pine trees and 72 willow trees in the park, and the number of poplar trees is twice that of pine trees and willow trees. How many poplar trees are there in the park?
公园里有松树58棵，柳树72棵，杨树的棵树是松树和柳树的2倍．公园里有杨树多少棵？
<gadget id="calculator">58 + 72</gadget>
<output>130</output>

<gadget id="calculator">130 * 2</gadget>
<output>260</output>

<result>260</result>