Dear Student
Mass of earth, M = 6*1024 kg
Mass of moon, m = 7.4*1024 kg
Distance between the earth and moon, r = 4*105 Km = 4 * 108 m
Using Gravitational law,
F =GMm/r2
Put values here and find your answer.
G = 6.67 × 10-11 N m2/kg2
Regards