This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
First change to not scientific notation.
6.3x10^5=630000 yards

1 mile=1760 yards

Convert yards to miles:
630000 yards(1 mile/1760 yards)=357.95 miles

Therefore the answer is 357.95 miles