I don't understand how to solve this problem:

Question 8 The ground receives and absorbs the solar radiation F and the back radiation from the atmosphere. By working out the energy balance for the ground, determine T in (K).Let's review the basics. Suppose that the ground temperature is To (K) and the ground receives and absorbs a downward energy flux F (W m-2). If the ground emits radiation according to the Stefan- Boltzmann law, and assuming the energy budget of the ground is balanced, what is the expression for To? Let o be the Stefan-Boltzmann constant.If F = S(1- A)/4, where S = 1360 W mi2 is solar constant, A = 0.3 (planetary Albedo), and o = 5.67 x 10-8 Wm-2K-4, compute To in Kelvin