The Daily Mail reporter seems to have dropped three zeros.
Space.com has its closest approach being around the orbit of Mars.
“The comet’s closest approach to the sun, which will occur in December, will be at roughly 186 million miles (300 million km), or twice Earth’s average distance from the sun.”
https://www.space.com/interstellar-comet-borisov-looks-normal.html
Now I'm disappointed. I just hope it doesn't smash into anything in the asteroid belt. That could be seriously bad news for Earth.