Calculate the density of a neutron star with a radius 1.71 x 10^4 m, assuming the mass is distributed uniformly. Treat the neutron star as a giant nucleus and consider the mass of a nucleon 1.675 x 10^-27 kg. Your answer should be in the form of N x 10^17 kg/m^3. Enter only the number N with two decimal places, do not enter unit.