A world record was set in Eco-Marathon by a french team in 2003 called Microjoule with a performance of 10,705 miles per gallon. The microjoule runs on ethanol. If the cars are given 100 grams of ethanol (specific gravity = .789) and drive until the fuel runs out, how far did the microjoule drive in kilometers?

Pic unrelated, please help I'm a retard