Solve the given problem:
Problem: If the period of the Moon's orbit around the Earth is 27.3 days and the radius of the Moon's orbit is RM = 3.85 x 108 m, the mass of the Moon is 7.35 x 1022 kg.
Part A: What is the magnitude of the force that keeps the Moon in its circular orbit?
It'd be really helpful if you could show all steps of your work. Thanks.