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.
The result was the Baltimore and Ohio Railroad, the first railroad chartered in the United States. There were great parades on the day the construction started. On July 4, 1828, the first spadeful of earth was turned over by the last surviving signer of the Declaration of Independence, 91-year-old Charles Carroll.