class PositionScale:
    def __init__(self, position: tuple[float, float] = (0, 0), scale: tuple[float, float] = (1, 1)):
        self.position = position
        self.scale = scale

    def apply_scale_to_position(self):
        return self.position[0] * self.scale[0], self.position[1] * self.scale[1]

    @staticmethod
    def combine(a, b):
        return PositionScale(
            (a.position[0] + b.position[0], a.position[1] + b.position[1]),
            (a.scale[0] * b.scale[0], a.scale[1] * b.scale[1])
        )