The nearest satellite of Mars is at a distance of r = 9.4 * 10⁶m from the center of the planet and moves around it at a speed of V = 2.1 * 10 ³m / s. Knowing that the gravitational constant G = 6.67 * 10⁻ˡˡ m³ / (kg · s²); determine the mass M of mars.

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