36500 days is equivalent to 100 years.
BUT you forgot leap years.
so 75x365 is 27375
and 25x366 is 9150.
altogether, you would have 36525.
So in order to eat an apple a day for 100 years, it would be 36525 days, not 36500.
Sorry, but they skip a leap year every 1000 years. That's why there wasn't a leap year in 2000. So it would be 36524 days. Assuming, of course, that you didn't start on a leap year, in which case you would end on a leap year making it 36523 days.
There WAS a leap year in 2000. They skip a leap year every 100 years, except for every 400 years (e.g. 2000, 2400 they DON'T skip the leap year - and 1900, 2100 leap year is skipped)
because 36500 days is about the equivalent of 100 years and if you ate an apple every one of those days you will have lived 100 years... if you don't count leap years