Convert from hartree to gallon [UK] of automotive gasoline

Unit Definition (hartree)
The hartree is a unit of energy used in atomic and moleclar physics, equal to about 4.3598 x 10E-18 joule or 27.212 electron volts. The unit is named for the British physicist and mathematician Douglas R. Hartree (1897-1958).

Unit Definition (gallon [UK] of automotive gasoline)
Imperial (UK) gallon is legally defined as 4.54609 litres. This definition is used in Commonwealth countries and Ireland, and is based on the volume of 10 pounds of water at 62 °F. (A U.S. liquid gallon of water weighs about 8.33 pounds at the same temperature.) The Imperial fluid ounce is defined as 1/160 of an Imperial gallon