There are 1,500 locust trees in the forest farm. The number of poplar trees is 2/5 that of pagoda trees and 2/5 that of willow trees. How many willow trees are there?
林场有槐树1500棵，杨树的棵数是槐树的(2/5)，又是柳树的(2/5)，柳树有多少棵？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) / (2/5)</gadget>
<output>1</output>

<gadget id="calculator">1_500 * 1</gadget>
<output>1_500</output>

<result>1_500</result>