How to decrypt teslacrypt .xxx files?

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Hey Everyone,

my files and pictures which are infected by .xxx extension

what should I do ? help me, please

Here is some encryption file in the archive :https:// mega . n z /#! N hUmzSYZ!pxGEMYp77UI3AhUxOzdFY5lk1YlPxU9qxZC38gXQm5w

Thanks a lot!