Calculate the angular momentum (in kg · m^2/s) of Mars in its orbit around the Sun. (The mass of Mars is 6.420 × 10^23 kg, the orbital radius is 2.279 × 10^8 km, and the orbital period is 1.88 y.) Compare this angular momentum with the angular momentum of Mars on its axis. (The radius of Mars is 3.396 × 10^3 km, and the rotation period is 24.62 h.)