Answer:
1 light year = 9.5 * 10^12 kilometers
1 light year = 5.9 * 10^12 miles
3 light years:
3 * 5.89 * 10^12 miles =
1.767 * 10^12 miles =
1.767 * 10^13 miles
How long does it take to get there?
(1.767 * 10^13) / (17000) =
(1.767 * 10^13) / (1.7 * 10^4) =
1.03941176471 * 10^9 =
1039411764.71 ≈ 1,040,000,000
It will take about 1,040,000,000 hours to get to a star that is 3 light years away.