Convert from gallon [UK] to hogshead [UK]

Unit Definition (gallon [UK])
Currently the British use a larger gallon than either of the American gallons. The Imperial Weights and Measures Act of 1824 established a new unit for all volumes, liquid or dry, replacing all the other gallons in previous use in Britain. The imperial gallon, designed to contain exactly 10 pounds of distilled water under precisely defined conditions, holds exactly 4.546 09 liters or approximately 277.4194 cubic inches. The imperial gallon equals 1.20095 U.S. liquid gallons (British wine gallons) or 1.03206 U.S. dry gallons (British corn gallons).

Unit Definition (hogshead [UK])
The hogshead [UK] is a traditional unit of volume for liquids. Originally the hogshead varied with the contents, often being equal to 48 gallons of ale; 54 of beer; 60 of cider; 63 of oil, honey, or wine; or 100 of molasses. In the British imperial system, the hogshead equals 1/2 butt, or 52.5 imperial gallons (8.429 cubic feet, or 238.67 liters). The British imperial and American hogsheads are almost exactly the same size. No one seems to know for sure how this unit got its unusual name.