That depends on how long you drive - and that, in turn, depends on how much fuel you have, and how tired you are.
40 miles for every hour you drive.
70 miles for every hour you drive.
45 mph
780 miles at 65 mph
148.75 miles.
19.5 miles.
2 hours, 59 minutes, 12 seconds
The answer depends on how many miles per hour you are doing!
You drive 80 miles for each hour. So 80 * x = miles.
25 miles
330 miles
7.67 miles.