The result of your conversion between miles/gallon(US) and watthour appears here
To convert between Miles/gallon(US) and Watthour you have to do the following:
First divide 5 / 3600 = 0.00138889
Then multiply the amount of Miles/gallon(US) you want to convert to Watthour, use the chart below to guide you.
Symbol: m/G
No description
Symbol: Wh
No description