The third and fourth grades each have 3 classes, and 150 students should be selected from them to join the choir. How many students should each class choose on average?
三、四年级各有3个班，要从中选150名同学参加合唱团，平均每班要选多少名同学？
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">150 / 6</gadget>
<output>25</output>

<result>25</result>