John's full retirement age is 66 years and 2 months. His PIA at full retirement age is $1000. (a). What's his monthly benefit if he retires early and starts to receive the benefit at age 62? (you only need to give the final answer, keep two decimals, no partial credits). (b). If his wife has the same age, and wants to retire at age 63 (she has never worked), what's her monthly spouse benefit? (you only need to give the final answer, keep two decimals, no partial credits)