An alarm clock tells the time on the hour, one time at 1 o'clock, and two times at 2 o'clock...Every time there is a 1-second interval between each time, until 10 o'clock, 10 times, how many seconds will it take to finish?
一只闹钟整点报时，1时就敲1下，2时就敲2下…每敲1下隔1秒，到10时整，敲10下，敲完要多少秒？
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">9 * 1</gadget>
<output>9</output>

<result>9</result>