Formula to convert 78.9 liters to gallons is to multiply 78.9 by 0.264172 (this is the value for 1 liter to gallon).
Convert 78.9 Liters to Gallons results
78.9 x 0.264172052 = 20.84317493436
78.9 l = 20.84 gal
To conclude the answer for 78.9 liters is twenty point eighty four gallons