Some computations on the Drake equation to encapsulate the probable number of broadcasting civilizations

The Drake equation has been utilized to investigate the number of probable civilizations in the Milky Way galaxy by computing the parameters in the equation involved, in a more realistic fashion. The two extreme boundaries have been first determined from the conservative and optimistic point of view and thereby extracting the realistic parameters the probable number of broadcasting civilizations has been estimated. The limitation of the equation is outlined and its suitable modifications have proposed.