Krishna is 56 years old; he has contributed to the CPP without interruption for over 30 years. While crossing the street, Krishna was struck by a bus and seriously injured. He is currently hospitalized and on life support and his doctors have informed Krishna's family that it is uncertain as to whether he will awaken from his coma. Assuming at the time of his accident, Krishna was entitled to a CPP retirement benefit of $660, the flat-rate disability amount is $496.36 per month and the maximum monthly disability benefit is $1362.30. 

How much of a disability benefit will Krishna receive under the CPP?