The standard enthalpy of a certain reaction is approximately constant at + 125 k] mol-l from 800

Question:

The standard enthalpy of a certain reaction is approximately constant at + 125 k] mol-l from 800 K up to 1500 K. The standard reaction Gibbs energy is +22 kJ mol-1 at 1120 K. Estimate the temperature at which the equilibrium constant becomes greater than 1.