There are 120 willows in the park, which are poplars (3/5), and the number of poplars is pagoda trees (2/3). How many locust trees are there?
公园里有柳树120棵，是杨树的(3/5)，杨树棵数又是槐树的(2/3)．槐树有多少棵？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">120 / (3/5) / (2/3)</gadget>
<output>300</output>

<result>300</result>