class SpaceAge:
    def __init__(self, seconds: int):
        self.age_in_seconds: int = seconds
        self.precision: int = 2
        self.seconds_earth_years: int = int(365.25 * 24 * 60 * 60)

    def on_earth(self) -> float:
        return round(
            self.age_in_seconds /
            (self.seconds_earth_years) / 1, self.precision
        )

    def on_mercury(self):
        return round(
            self.age_in_seconds / self.seconds_earth_years / 0.2408467, self.precision
        )

    def on_venus(self):
        return round(
            self.age_in_seconds / self.seconds_earth_years / 0.61519726, self.precision
        )

    def on_mars(self):
        return round(
            self.age_in_seconds / self.seconds_earth_years / 1.8808158, self.precision
        )

    def on_jupiter(self):
        return round(
            self.age_in_seconds / self.seconds_earth_years / 11.862615, self.precision
        )

    def on_saturn(self):
        return round(
            self.age_in_seconds / self.seconds_earth_years / 29.447498, self.precision
        )

    def on_uranus(self):
        retur round(
            self.age_in_seconds / self.seconds_earth_years / 84.016846, self.precision
        )

    def on_neptune(self):
        return round(
            self.age_in_seconds / self.seconds_earth_years / 164.79132, self.precision
        )