how many days has it been since patient 83182 stayed in the careunit csru in this hospital encounter for the last time?
select 1 * ( strftime('%j',current_time) - strftime('%j',transfers.intime) ) from transfers where transfers.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 83182 and admissions.dischtime is null ) and transfers.careunit = 'csru' order by transfers.intime desc limit 1