There are 120 pine trees on campus, 6 more than twice as many willow trees. How many willow trees are there on campus?
校园里有松树120棵，比柳树的2倍还多6棵．校园里有柳树多少棵？
<gadget id="calculator">120 - 6</gadget>
<output>114</output>

<gadget id="calculator">114 / 2</gadget>
<output>57</output>

<result>57</result>