239844J to ile to kWh ?????      

  1kWh = 1000Wh = 1000W * 3600s = 3600 000J    1kWh              x ------------ = ---------------- 3600000J   239844J   x ≈ 0,07kWh   ---------------------------------------------------------------------------------------------------- Litterarum radices amarae sunt, fructus iucundiores   Pozdrawiam :)