An ounce is a unit of weight which is approximately equal to 28  grams. One gallon is equal to 128 ounces so there are 640 ounces in  5 gallons of water.
The first U.S. railroad to use a steam locomotive in revenue service was the South Carolina Railroad. It opened on Christmas Day 1830 using the Best Friend of Charleston steam locomotive on six miles of track in Charleston, South Carolina.
George Stephenson, who lived near this colliery designed his first locomotive -- Blucher in 1814 again, for a colliery. The first public railway was the Stockton and Darlington Railway, whose first run took place on Tuesday, September 27, 1825 with Stephenson-designed locos, the first of which was called Locomotion.