$${T = \frac{2 K-k}{3k} = \frac{(2)(5,75 \times 10^{-14}\, \mathrm{J})}{(3)(1,38 \times 10^{-23}\, \mathrm{J/K})} \\ \approx \underline{\underline{3 \times 10^9\, \mathrm{K}}}}$$