Three galaxies, each of mass M = 4 ´ 1041 kg, lie in a plane at the corners of an equilateral triangle with sides of 9 ´

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Three galaxies, each of mass M =
4 ´ 1041 kg, lie in a plane at the
corners of an equilateral triangle with sides of
9 ´ 1022 m length. The magnitude of the
force the other two galaxies exert on each galaxy is: (write your
answer in terms of A x 1027 newtons, and then input
only the 'A'))