NAM = 1500 NAM

From table 190 000 kg →6417 NAM

(6417 – 1500) = 4917 NAM → 173 000 kg

Fuel (190 000  – 173 000) = 17 000 kg

Icing/Pack flow/ISA -  no correction

Climb correction 2800 kg

Descent correction 1000kg

Landing mass = 190 000 – (17 000 + 2800 – 1000) = 171 200 kg