Two satellites P and Q are moving in different circular orbits around the Earth (radius $R$ ). The heights of P and Q from the Earth surface are $h_{\mathrm{P}}$ and $h_{\mathrm{Q}}$, respectively, where $h_{\mathrm{P}}=R / 3_3$. The accelerations of P and Q due to Earth's gravity are $\mathrm{g}_{\mathrm{P}}$ and $\mathrm{g}_{\mathrm{Q}}$, respectively. If $\mathrm{g}_{\mathrm{P}} / \mathrm{g}_{\mathrm{Q}}=36 / 25$, what is the value of $h_{\mathrm{Q}}$ ?