On average, a commercial airplane burns about 4.0 × 10^3 mL of gasoline per second. There can be as many as 5 × 10^3 airplanes in the air in the United States at any given time.

About how many gallons of gasoline are burned per hour by commercial airplanes in flight in the United States? (1 gal = 3,785.41 mL).

1.9 × 10^? gal

Question

On average, a commercial airplane burns about 4.0 × 10^3 mL   of gasoline per second. There can be as many as 5 × 10^3 airplanes in the air in the United States at any given time.
 
About how many gallons of gasoline are burned per hour by commercial airplanes in flight in the United States? (1 gal = 3,785.41 mL).
 
1.9 × 10^?   gal

jack1 · Answer

4.0 × 103
... u missing something here dude...?
should it be 
4.0 × 10^3 mL...?