<gh_stars>1-10
    # Activity
    
    @classmethod
    def distance(unit, *args):
        distance = 0
        distance = reduce(lambda x, y: x*y, args)
        return "%s %s" %(distance, unit)

# Activity
    
    @classmethod
    def distance(unit, *args):
        distance = 0
        distance = reduce(lambda x, y: x*y, args)
        return "%s %s" %(distance, unit)
# Activity