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"solve such problems as the number of seconds in 2,000 years" - I'm not sure if I can do that correctly, even with a calculator.

What about leap years and leap seconds?

https://infiniteundo.com/post/25326999628/falsehoods-program...




Leap seconds didn't exist then.

Leap years (looking forward) run on a 400 year cycle, and 400 divides 2000


Which 2000-year period? Do you mean from the year 0 to 2000, or 20 to 2020, or 1600 to 3600?

The Gregorian calendar wasn't standardised until 1582.




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