if 1 gallons is equivalent to 3.79 liters, about how many gallons are equivalent to 19 liters ?
Divide 19 by 3.76 to see how many 3.76 liters there are. After that, you know that 3.76L is the same as one gallon.
\(\frac{19}{3.79}\approx 5\)
So the answer is \(5\)!