There are 150 students in the sixth grade of Hongxing Primary School. Half of the students participate in the interest group activities. Among them, the students who participate in table tennis account for 1/3 of the interest group. How many people participate in table tennis?
红星小学六年级共有150人，有一半的同学参加兴趣组活动，其中参加乒乓球的同学占兴趣组的(1/3)，参加乒乓球的有多少人？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">150 * (1/2) * (1/3)</gadget>
<output>25</output>

<result>25</result>