Cell Potential and Concentration Ratio

Consider the cell
Pt( s)|H2(g,1‌atm)|H+(aq,1M)
Fe3+(aq),Fe2+(aq)∣Pt( s)
When the potential of the cell is 0.712V at 298K, the ratio [Fe2+]∕[Fe3+] is _______.
(Nearest integer)
Given: Fe3++e−=Fe2+,E∘Fe3+,Fe2+∣Pt=0.771
‌

2.303‌RT

F

=0.06V