"What Crap"
What a highly intellectual & sophisticated response you make.
The trip will take a week, or will be only work done by said crew for that one week.
Just sum the total of aircrew + cabin crew wages (annualized) for one week & do a subtraction, you will find the calc is quite accurate.
You also have to work out the difference in cash allowances given at the port , understand the QF boys & girls are on two or three times the cashies
that most other airlines get - likely a couple of grand there already
You starting to see why you are getting eaten alive ?