I think this is hard question to answer....too many variables.
Gas money depends on your MPG, how far you drive per day and your average speed.
Money for food, entertainment, etc can vary considerable depending on what part of the country you are in, if you are eating in or out, if your entertainment is hiking a trail or taking a safari, etc.
2013 Jayco JayFlight 26RKS
2013 Ford F150 Ecoboost FX4
2003 Coleman Bayside / 2011 Jayco Jayfeather X20E -- RIP
2012 Tacoma Sport DCSB / 2013 Tundra SR5 - RIP