How did you get 1845 when i got 1890

What is the greater volume 72 quarts or 23 gallons

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

[15 points, algebra 2]simplify the complex fraction and find the restrictions.