Partial Derivatives & the Gradient · Medium problem

Let $f(x, y) = 2 x^{3} - x^{2} y + 3 x^{2} - 3 x y^{2} + 2 x y + 2 x + 2 y^{3} + y^{2} + 2 y - 1$. Find $f_{xy}(1, 2)$.