The students participated in the tree planting activity at the school. They planted 80 poplars, the willows (1/3) and the locust trees (2/5). How many locust trees did the students plant?
同学们参加学校植树活动，栽的杨树是80棵，栽的杨树是柳树的(1/3)，栽的柳树又是槐树的(2/5)，同学们栽槐树多少棵？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">80 / (1/3) / (2/5)</gadget>
<output>600</output>

<result>600</result>