my object is numerical methods fot steady state conduction in two dimensions. please solve this object

2) Figure shows a cross section of a hollow rectangular chamber with the inside dimensions 4 x 2 m and outside dimensions 8 x 6 m is initially held at TO=300 K. The chamber is 20 m long. The inside walls are held at 500 K and the outside at 350 K and 250 K. The kis 1.5 W/m/K. For steady-state conditions find the heat loss per unit chamber length. Use grids 1x1 m. Perform 2 iterations of the method starting with TO=300 K. (30 pts) 0,1 10,2 0,3 500K 1,1 1,2 1,3 250 K 2,1 2,2 2,3 2,4 2,5 2,6 3,1 3,2 3,3 3,4 3,5 3,6 4,1 4,2 4,3 4,4 4,5 4,6 350 K