If $f(x, y)=3 x^{2}-4 x y+2 y^{2},$ the summation of $\frac{\partial f}{\partial x}$ and $\frac{\partial f}{\partial y}$ for $x=1$ and $y=2$ is_______________

If $f(x, y)=3 x^{2}-4 x y+2 y^{2},$ the summation of $\frac{\partial f}{\partial x}$ and $\frac{\partial f}{\partial y}$ for $x=1$ and $y=2$ is_______________

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