After the physical education teacher bought 40 table tennis balls for 200 yuan, there is still 80 yuan left. How much is each table tennis ball?
体育老师用200元钱买了40只乒乓球后，还剩80元，每只乒乓球多少元？
<gadget id="calculator">200 - 80</gadget>
<output>120</output>

<gadget id="calculator">120 / 40</gadget>
<output>3</output>

<result>3</result>