The school has to make 1,500 colorful flags, and assign this task to 25 classes. Each class has 4 groups. On average, each group has a landline with colored flags?
学校要做1500面彩旗，把这个任务交给25个班，每班有4个组，平均每组座机面彩旗？
<gadget id="calculator">1_500 / 25 / 4</gadget>
<output>15</output>

<result>15</result>