The result of your conversion between miles/gallon(US) and hectojoule appears here
To convert between Miles/gallon(US) and Hectojoule you have to do the following:
First divide 5 / 100 = 0.05
Then multiply the amount of Miles/gallon(US) you want to convert to Hectojoule, use the chart below to guide you.
Symbol: m/G
No description
Symbol: hJ
No description