You should be able to make the math yourself; Typhoon’s maximum meteor number is 8.According to Greeks we are planning to but 300 Meteor missiles, i could not find something like that.
Are the neighbours spreading lies?
4 under fuselage and 2 under each wing. But in air superiority set up, it has 6 meteors and 2 WVR missiles.
40 planes will need 240 meteors if you set them up as air superiority fighters. There should be a good number of spares and test and practice missiles too.
In normal runs it should carry 4 meteors. That alone makes 160 missiles. A complete set of spares will bring the tally above 300.