A clock strikes the hour at half an hour, for example, it strikes 8 times at 8 o'clock, how many times does the clock strike in total in one day and night?
一只钟逢半时就敲整时下，如8时就敲8下，那么一昼夜这只钟一共敲多少下？
<gadget id="calculator">1 + 12</gadget>
<output>13</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">13 * 6 * 2 * 2</gadget>
<output>312</output>

<result>312</result>