Gets the reward pool balances
        then calculates rshares to steem

def rshares_to_steem (self, rshares):
        ''' Gets the reward pool balances
        then calculates rshares to steem
        '''
        self.reward_pool_balances()
        return round(
            rshares 
            * self.reward_balance 
            / self.recent_claims 
            * self.base, 4)