Please solve problem that is shown below for calculating reiman sum

(1 point) Calculate a Riemann sum $33, on the square R = [0, 3] x [0, 3] for the function g(x, y) = f(x, y) 4. The contour plot of f(x, y) is shown in Figure 4. Choose sample points and use the plot to find the values of f(x, y) at these points. Use the values of at, y) to evaluate g(x, y) accordingly. FIGURE 4 Contour plot ofr, y). S33 = 555