During the physical education class, students from Class 4 and Class 3 stood in 5 rows with 12 people in each row. Divide them into 4 groups evenly during the activity, how many people should each group have?
体育课时，四3班的同学站成了5排，每排12人．活动时把他们平均分成4组，每组应该是多少人？
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">12 * (5/4)</gadget>
<output>15</output>

<result>15</result>