Average fuel consumption (per hour)
That could be the 'real world' data for your plane (if you know that) or
the following formula:
FC = (S.F.C. x HP or lbs. thrust) - 30%
(both from Planemaker)
Average fuel cost (per hour)
Not included in the DOC calculation, but required to file flights in the
online system:
$/h = FC * 0.34
Fuel price is being averaged by Mr. Hak at 0.34 $ per lb.