Simviation Forums

Top of the day to all. Can someone direct me how to do this right. I planned a flight and the flight plan say i would use 778gls of fuel since i was flying the 737-800 which has a center, left and right tanks i devided the 778 by 3 and add 16 more gls making it a total of 794gls but ran out even before a reach the desired altitude and around 10mins into the flight. Help me please how to do this right.

In game fueling thing is not the best.
Plus you have to consider the amount of throttle you had(if auto throttle, then the wind speeds) because I remember doing a Flight from MIA,to Osaka and I had heavy winds that made me have to land at another airport.