The Great Lakes are how big?

The Voyager 1 spacecraft, launched September 15, 1977, is the farthest-traveling Earthmade object. It is presently on the outer edges of our solar system. The NASA update page on September 25, 2009, reported it as being a distance of approximately 16,637,000,000 miles from the sun, traveling away from the sun at 38,241 miles/hour.
Write a program that will prompt the user for an integer number that indicates the number of days after 9/25/09. You will calculate the distance of Voyager from the sun using the numbers from 9/25/09 (assume that velocity is constant) plus the entered number of days, and report:

• Distance in miles
• Distance in kilometers (1.609344 kilometers/mile)
• Distance in astronomical units (AU, 92,955,887.6 miles/AU)
• Round-trip time for radio communication in hours. Radio waves travel at the speed of light, listed at 299,792,458 meters/second.