Please help with step by step calculation of various temperature nodes please show all the steps

4.15-4 Two-Dimensional Heat Conduction and Different Boundary Conditions. A very long, solid piece of material 1 by 1 m square has its top face maintained at a constant temperature of 1000 K and its left face at 200K. The bottom face and right face are expose to an environment at 200 K and have a convection coefficient of h = 10 w/m2K. The k = 10 w/mk. Use a grid size of and calculate the steady-state temperatures of the various nodes. =