An electrostatic dust precipitator in an industrial smokestack removes particulates by charging them and collecting them on plates. During a continuous 12.5-hour12.5\text{-hour}12.5-hour operation cycle, a total charge of 54,000 coulombs54,000\text{ coulombs}54,000 coulombs is transferred by the moving ions to the collecting plates.
Calculate the mean current associated with this charge transfer.