Put the same number of ping-pong balls and badmintons in a small box, take out 5 ping-pong balls and 3 badmintons each time, after taking several times, the ping-pong balls are gone, and there are 6 badmintons left, how many are the ping-pong balls and badmintons? indivual.
小箱子里装同样数量的乒乓球和羽毛球，每次取出5个乒乓球和3个羽毛球，取了若干次后，乒乓球没有了，羽毛球还剩下6个，原来乒乓球和羽毛球各有多少个．
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">9 + 6</gadget>
<output>15</output>

<result>15</result>