Suppose that the average annual malpractice cost is ​$50,000 for reckless doctors and ​$1,000 for careful doctors. If half of an insurance​ company's insured doctors are​ reckless, the company will earn zero economic profit if the price of insurance is ​$______nothing. ​If careful doctors are not willing to pay more than ​$5,000 for​ insurance, the price required for zero economic profit is ​$_______nothing.