There are 60 willow trees in the park, and the number of pine trees is (2/3) that of willow trees. How many pine trees are there in the park?
公园里有柳树60棵，松树的棵数是柳树棵树的(2/3)，公园里的松树有多少棵？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">60 * (2/3)</gadget>
<output>40</output>

<result>40</result>