Answer
$485 \text { mi}$
Work Step by Step
Convert by multiplying $\dfrac{1 \text{ mi}}{1.6 \text{ km}}$ to obtain:
$\require{cancel}=776 \cancel{\text{ km}}\cdot \dfrac{1 \text{ mi}}{1.6 \cancel{\text{ km}}}
\\=\dfrac{776}{1.6} \text{ mi}
\\=485 \text { mi}$
