A clock strikes 6 times at 6 o'clock, and it takes 5 seconds to finish beating, and this clock strikes 12 times at 12 o'clock, how many seconds to finish beating.
一个时钟6时敲6下，5秒敲完，这个时钟12时敲12下，多少秒敲完．
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">5 / 5</gadget>
<output>1</output>

<gadget id="calculator">12 - 1</gadget>
<output>11</output>

<gadget id="calculator">11 * 1</gadget>
<output>11</output>

<result>11</result>