Convert from bucket [UK] to drum [US, petroleum]

Unit Definition (bucket [UK])
The bucket [UK] is a unit of volume, generally informal. In Britain, a bucket is often understood to be 4 gallons, or 18.182 liters based on the British Imperial gallon.

Unit Definition (drum [US, petroleum])
The drum [US, petroleum] is a unit of volume sometimes used in the oil trade. The traditional standard drum of oil contains 55 U.S. gallons or about 208.198 liters. One 55-gallon drum equals 1.3095 barrels.