A person has a watch, and he finds that the watch is 30 seconds faster than the alarm clock at home, but the alarm clock is 30 seconds faster than the standard time, so how many seconds is the difference between this person's watch and the standard time in a day and night.
某人有一只手表，他发现手表比家里的闹钟快30秒，而闹钟却比标准时间每小时快30秒，那么此人的手表一昼夜与标准时间差多少秒．
<gadget id="calculator">3_600 + 30</gadget>
<output>3_630</output>

<gadget id="calculator">3_630 / 3_600</gadget>
<output>121/120 = around 1.008333</output>

<gadget id="calculator">(121/120) * (121/120)</gadget>
<output>14_641/14_400 = around 1.016736</output>

<gadget id="calculator">(14_641/14_400) - 1</gadget>
<output>241/14_400 = around 0.016736</output>

<gadget id="calculator">24 * (241/14_400) * 3_600</gadget>
<output>1_446</output>

<result>1_446</result>