gravitation

The gravitational force between two people is found to be 5.9 x 10"1 N. What would the gravitational force be between the two people if person A's mass is decreased to 1/3 the original value, person B's mass is increased to 3/2 of the original mass, and the separation distance between them is increased by a factor of 2? Expressed in scientific notation, is a.b x 10" N. The values for a, b, c, and d are and