Not sure why the maths confuses people
example hot and dusty location, trimotor lifted on average 130k of fuel
lets say 10 hr sortie, burn using worse case 8 k ph div fuel 15 k so thats 95 k available give is oohh 35k
voyager 94k capacity thrrefore max lift same sortie 6k ph average worse case burn div lets drop it a bit say 12 k thats total 72k so avai give is oohhh lets see 22k
pretty clear to me
hey ho it is what it is, thats the decision we have to live with