How would I differentiate this?

$\displaystyle x^2+\frac{2000}{x}$

I thought it would go like this (but it doesn't work). Where am I going wrong?::

$\displaystyle x^2+2000*x^{-1}$>>>>>$\displaystyle x^2+2000^{-1}*x^{-2}=x^2+\frac{1}{2000}*\frac{1}{x^2}$

Please help me out. Thank you in advance.