Answer:
7.70 x 10^-4 cubic miles
Step-by-step explanation:
A cubic MILE is 5280^3 ft^3
ONE cubic foot is 7.480519 gallons
8.48 x 10^8 gallons / 7.480519 gallons / ft^3 = 113 361 111.111 ft^3
this number , divided by 5280^3 is the cubic miles=.00077 mi^3