hi all i dont know if this the right place to add this form

fist of all just want to say am not a pilot am a flight enthusiast

i have a little problem of i dont know how to calculate fuel for a 737 900 pmdg

i am useing a flight simulator and i have to work out the amount of fuel i need to get from

EHAM - Amsterdam Schiphol, The Netherlands to LOWI –
Innsbruck, Austria and the rough is

LUNI1S.EDUPO.UZ738.MISGO.UZ741.GMH.UL603.TESGA.UZ7 29.
BOMBI.T104.XERUM.UM867.BAVAX.Z106.MANAL.M736.TULSI .TULS3A

can some 1 explain this to me in detail step by step coz i realy dont understand

and i think my head is going to exploded