how many days have elapsed since the last time that patient 83182 stayed during this hospital visit in careunit csru?
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