A bullet train left for japan at 0700. the trian stopped over at malaysia for half an hour before continuing its journey to japan . it reach

I  think everyone drowned and the train derailed somewhere in the East China Sea  

I suppose it was an amphibious train  

It took 6hours and 45 minutes.  Take out the 30 min break.  

That is 6 hours and 15 minutes.

That is       $$6\frac{1}{4}\;\;hours = 6.25\; hours$$

$$6.25hours\times 350km/hour$$

$${\mathtt{6.25}}{\mathtt{\,\times\,}}{\mathtt{350}} = {\frac{{\mathtt{4\,375}}}{{\mathtt{2}}}} = {\mathtt{2\,187.5}}$$

2187.5 km