Ionic Equilibrium

\(25.0 \mathrm{~mL}\) of \(0.050 ~\mathrm{M} ~\mathrm{Ba}\left(\mathrm{NO}_{3}\right)_{2}\) is mixed with \(25.0 \mathrm{~mL}\) of \(0.020 ~\mathrm{M} ~\mathrm{NaF} . \mathrm{K}_{\mathrm{Sp}}\) of \(\mathrm{BaF}_{2}\) is \(0.5 \times 10^{-6}\) at \(298 \mathrm{~K}\). The ratio of \(\left[\mathrm{Ba}^{2+}\right]\left[\mathrm{F}^{-}\right]^{2}\) and \(\mathrm{K}_{\mathrm{sp}}\) is ___________.

(Nearest integer)