There are 1569 badmintons in total, every 12 are packed into a tube, and there are 9 left after filling, how many tubes are installed in total?
共有1569个羽毛球，每12个装一筒，装完后还剩9个，一共装了多少筒？
<gadget id="calculator">1_569 - 9</gadget>
<output>1_560</output>

<gadget id="calculator">1_560 / 12</gadget>
<output>130</output>

<result>130</result>