300000000 years equals three hundred million years
century is years. one_thousand_milliseconds is not second. earth is not over_400_million_years_old. millenium is not 1000_years. 1530s is decade. hundred_years is century. earth is over_400_million_years_old. millenium is 1000_years. century is not 100_years. century is 100_years.