A primary school is planning to green the campus. The number of poplars planted is (4/5) the number of Magnolia plants, the number of Magnolia trees is 1/3 of the number of weeping willows, and 16 poplars are planted. How many weeping willows?
某小学准备绿化校园，植杨树棵数是植广玉兰棵数的(4/5)，植广玉兰的棵数是植垂柳棵数的(1/3)，植杨树16棵，问值垂柳多少棵？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">16 / (4/5) / (1/3)</gadget>
<output>60</output>

<result>60</result>