def bp_to_bbd(self, sp, post_rshares=0, voting_power=STEEM_100_PERCENT, vote_pct=STEEM_100_PERCENT, not_broadcasted_vote=True, use_stored_data=True):
        """ Obtain the resulting equivalent BBD vote value from Blurt power

            :param number steem_power: Blurt Power
            :param int post_rshares: rshares of post which is voted