I'm keeping track of my fuel economy in excel (yes I'm a nerd)
Anyway, I want to keep a running average of my MPG.
Basically what I have happening is that I currently input the date I purchased my gas, location, what the fuel rate was, how many litres, how much I paid, and distance I drove. Excel currently automatically figures out my MPG, L/KM and KM/L.
I'd like to be able to input exactly what I currently do and have another column of a running average of my MPG
So what do I have to put into the formula bar that will automatically give me my average?