Means Pramukh Swami Maharaj built an organisation such as a temple or a school or a hostel or a hospital every 15 days (average 1 organisation in 15 days)and that also for 45 years means from the age at which he became guru till the age he went to Akshardham (divine abode of Bhagwan Swaminarayan).i.e. from 50 to 95...