Two trains leave the station at the same time, one heading east and the other west. the eastbound train travels at a rate of 65 miles per hour. the westbound train travels at a rate of 85 miles per hour. how long will it take for the two trains to be 210 miles apart?

Without any equipment, you can see stars that are 2{,}800{,}0002,800,0002, comma, 800, comma, 000 light-years away. by looking through a small telescope, you can see stars that are 3{,}112{,}000{,}0003,112,000,0003, comma, 112, comma, 000, comma, 000 light-years away. approximately how many times as far can you see using a small telescope as without any equipment?