Costs more. Send me a one time payment of 19.99 and I'll have your new digital E6B readout installed on your clipboard in no time.
Or if you want to handle the chore yourself, settle in for some reading this weekend and open the Help pages. You'll find self-install instructions for all sorts of things you didnt know your plane could do.

Ok ok ok. The fuel gague on the dash shows the amount of fuel in the currently selected tank. Click on the E6B link on your clipboard to get total remaining fuel, how many minutes and how much distance you have left at current engine settings, etc.