The Voice of Hope radio station broadcasts from 6:00-10:00, 11:00-14:30, and 16:30-20:00 every day. How much time does it broadcast in a day?
希望之声广播站每天6：00-10：00，11：00-14：30，16：30-20：00播音，一天播音多少时间？
<result>11</result>