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Assuming a 90 year spell includes 22 leap years, the number of days is equal to (68 x 365) + (22 x 366) = 24820 + 8052 = 32872 days. If the 90 year spell includes 23 leap years, the number of days is equal to (67 x 365) + (23 x 366) = 24455 + 8418 = 32873 days. 3 people found this useful.
Not far off Churchillâs estimate and probably less than the number you came up with . The reason is that a) people generally overestimates the number of days in a lifetime . Eighty years are only 365 X 80 = 28,800 days . and b) most avid readers also overestimate the number of books they read each year. 100 books /year translates two books a week ; I think that we can agree it is a fair approximation. The number ( whether 5,000 or 6,000) is also surprising to me for another reason.