Please improve your question. one quarter of? a hour 900 a day 21600 a year 7884000 a century 788400000 a millennium 7 884 000 000. or is it a quarter in currency? if so, your ignorant! or one quarter of a moon? well depends what you mean by seconds.
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1 minute = 240 1/4-seconds
1/4 hour is 900 seconds.
1 minute = 60 seconds 1.25 minutes = 75 seconds.
1/4 hour is 900 seconds.
375 seconds.