The school bought 15 tubes of badminton, and each tube has 12 badmintons. The total cost was 540 yuan. How much is each badminton on average?
学校买了15筒羽毛球，每筒羽毛球有12个，一共用去了540元钱，平均每个羽毛球多少钱？
<gadget id="calculator">15 * 12</gadget>
<output>180</output>

<gadget id="calculator">540 / 180</gadget>
<output>3</output>

<result>3</result>