Calculate the ratio of the density at the centre of the Sun compared to the density of the photosphere.

Density of Sun at the centre: 1.6 x 10⁵ kg m^-3

Density of the Sun in the photosphere: 2 x 10^-4 kg m^-3

Express your final answer in the fully factorised formx =1 , where xis a number that you should determine to an appropriate number of significant figures and using scientific notation.