There are 16 people in the fourth grade participating in the school model aircraft group, which is less than the fifth grade (1/3), and the fifth grade is equivalent to the sixth grade (4/5). How many people in the sixth grade participate in the aircraft model group?
四年级有16人参加学校航模小组，比五年级人数少(1/3)，五年级人数相当于六年级人数的(4/5)，六年级有多少人参加航模小组？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

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

<result>30</result>