In example 10.1-gravitation.i am not getting the correct answer.could you please explain it to me.the complete steps are not given in the textbook.

The mass of the earth, M = 6 × 1024 kg
The mass of the moon,
m = 7.4 × 1022 kg
The distance between the earth and the
moon,
d = 3.84 × 105 km
  = 3.84 × 105 × 1000 m
  = 3.84 × 105+3 m = 3.84 ×108 m
G = 6.7 × 10–11 N m2 kg–2
= F =G× M× md2     =6.7 × 10–11×6 × 1024 ×7.4 × 1022(3.84 × 108)2    =6.7×6×7.4×10-11+24+2214.74×1016    =297.48×10-11+24+22-1614.47    = 20.1×1019 = 2.01 ×1020 Thus, the force exerted by the earth on the moon is 2.01 × 1020N.




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