At the border post, there are soldiers standing guard 24 hours a day, requiring each person to stand on guard twice a day, and each guard requires one person. If the time of each guard change happens to coincide with the hour and minute hands of the clock, how many soldiers should be arranged to stand guard at this border post every day?
边防哨所，二十四小时不间断地有士兵站岗，要求每人每日站两岗，每岗需1人．如果每次换岗的时间都恰好是钟表上时针与分针重合的时间，那么这个边防哨所每天应该安排多少名士兵站岗．
<gadget id="calculator">24 * 60</gadget>
<output>1_440</output>

<gadget id="calculator">5 / 60</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 - (1/12)</gadget>
<output>11/12 = around 0.916667</output>

<gadget id="calculator">60 / (11/12)</gadget>
<output>720/11 = around 65.454545</output>

<gadget id="calculator">1_440 / (720/11)</gadget>
<output>22</output>

<result>22</result>