840 miles = ~0.0000090365521499 AU
http://www.infoplease.com/ipa/A0001801.html
840 meters is 0.52 miles.
That state of California has 840 miles of coastline.
1365
1 astronomical unit (AU) is approximately equal to the average distance between the Earth and the Sun, which is about 93 million miles. Therefore, 5.20 AU is approximately 483.6 million miles.
Interstate 840 (I-840), is a 77 miles loop interstate highway around Nashville, Tennessee.
840/70 = 12 hours.
Multiply AU by 92,955,807.3 to get miles.
1 AU is 92,956,000 miles.
50,000 AU is 4,647,790,440,000 miles.
7 AU is 650,690,662 miles.
1 AU is 93 million miles. 2790 million miles is 30 AU.