I bought 5 boxes of badminton balls, 7 in each box, and spent a total of 120 yuan. How much is each badminton ball?
买了5盒羽毛球球，每盒7个，一共花了120元，每个羽毛球球多少元？
<gadget id="calculator">120 / 5 / 7</gadget>
<output>24/7 = around 3.428571</output>

<result>24/7 = around 3.428571</result>