There are 60 willow trees in the park, which are less than the number of pine trees (2/3). How many pine trees are there in the park?
公园里有柳树60棵，比松树的棵数少(2/3)，公园里有松树多少棵？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">60 / (1/3)</gadget>
<output>180</output>

<result>180</result>