For January through April 2020, at the height of the global coronavirus pandemic, it is estimated that global emissions of carbon dioxide (CO2) decreased by 940 million metric tons (1metric ton=1000kg) compared to the same period in 2019. Combustion of a gallon of gasoline generates about 8900 g of CO2 . How many gallons of gasoline would need to be burned to generate 940 million metric tons of CO2 ? Express the volume in gallons to two significant figures.