Partial Derivatives & the Gradient · Medium problem

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