program MillisecondsToYears;
uses
SysUtils;
const
MS_PER_SECOND = 1000;
SECONDS_PER_MINUTE = 60;
MINUTES_PER_HOUR = 60;
HOURS_PER_DAY = 24;
DAYS_PER_YEAR = 365.25;
function MillisecondsToYears(ms: Int64): Double;
begin
MillisecondsToYears := ms / (MS_PER_SECOND * SECONDS_PER_MINUTE *
MINUTES_PER_HOUR * HOURS_PER_DAY * DAYS_PER_YEAR);
end;
var
milliseconds: Int64;
years: Double;
begin
milliseconds := 1476907455894;
years := MillisecondsToYears(milliseconds);
WriteLn('Years: ', FormatFloat('0.00', years));
end.
(*
run:
Years: 46.80
*)