The school planted a batch of saplings, including 30 camphor trees, the number of sweet-scented osmanthus trees belonged to camphor trees (4/5), and the number of Guangyulan trees belonged to sweet-scented osmanthus trees (2/3). How many magnolias have been planted in the school?
学校种植一批树苗，其中樟树有30，桂花树的棵数是樟树的了(4/5)，广玉兰的棵数是桂花树的(2/3)．学校种植了多少棵广玉兰？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

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

<gadget id="calculator">30 * (4/5) * (2/3)</gadget>
<output>16</output>

<result>16</result>