A 3.07 kg object is thrown vertically upward from the surface of Earth, where the acceleration due to gravity is 1=9.81 m/s². The initial velocity is 1, and the object reaches a maximum height of 1. What is the maximum height, 2, if the object is thrown with a speed of 2=1.871 from the surface of Saturn's moon Iapetus? The acceleration due to gravity on Iapetus is 2=0.223 m/s². Give your answer as a multiple of 1.