Hello everyone, i'm in need of some assistance

the boeing 747-8 intercontinental jet can carry approximately 422,000 gallons of gasoline, making it possible for the jet to travel 14,430 kilometers before needing to refuel.
using the graph, approximate the jet's average gas consumption, in gallons per hour, during the sixteen hour flight from los angeles, california to melbourne, australia. in your final answer, include all of your calculations.