How much fuel (kerosene) does a 747 burn?

When the gas crunch of the '70's got underway, a friend who was in a squadron (I was at NAS Miramar then) told me what a Phantom could hold full fuel load. Whatever it was we estimated that if you figured that in gas gallons instead of pounds of JP it would operate my (then) 440-6 Roadrunner a couple of years. Just one mission. And just one aircraft