What ADDINGUP did makes ABSOLUTELY no sense. That person is only making your life more complicated by telling you to CONVERT kilometers to meters. WHY???
Again, that's TOTALLY, TOTALLY UNNECESSARY. Just divide 528 by 3,600 (number of seconds in 1 hour), and then multiply by 24, as follows:.
This should give you
That's all!!
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A lot LOT of animosity for a minor difference, IMO.