There are a total of 90 students in classes 1 and 2 of the sixth grade. This year's cultural performance will be selected (1/3) from the six 1 students to participate in the poetry recitation, and (1/3) from the six 2 students will also be selected to participate in the poetry recitation. How many people participated in the poetry reading in the sixth grade?
六年级1、2班共90人，今年的文艺表演从六1学生中选(1/3)参加诗歌朗诵，从六2学生中也选(1/3)参加诗歌朗诵．六年级参加诗歌朗诵的有多少人？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">90 * (1/3)</gadget>
<output>30</output>

<result>30</result>