Unless you have a substantial leak there's no way your engine could burn that much fuel without blowing gigantic clouds of black smoke and your oil smelling heavily of gas (and being as thin as water if not more).

I'd suggest a gas cap lock ASAP.

__________________
Current:
2021 Charger Scat Pack Widebody "Sinabee"
2018 Durango R/T

Previous:
1972 280SE 4.5
2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi"
1999 Chrysler 300M - RIP @ 221k