A crane raises a load of 2.5 tonnes, in 6 min 20 sec calculate power of crane in kW?

A crane raises a load of 2.5 tonnes, in 6 min 20 sec calculate power of crane in kW?

t 660+20 380 sec P WV 2.5g1000H/t 64.47H watts where H is the height in meters the load is liftedWithout the height, there is no answer.