Three identical very dense masses of 7400 kg each are placed on the x axis. One mass is at x1 = -120 cm , one is at the origin, and one is at x2 = 350 cm . What is the magnitude of the net gravitational force Fgrav on the mass at the origin due to the other two masses?
Take the gravitational constant to be G = 6.67×10−11 N⋅m2/kg2 .

Express your answer in newtons to three significant figures.