what is the answer ??

Certain product requires 3 assembly operations (1,m,q) are sequentially done automatic assembly line. this assembly line to produce 6000 parts/month and the plant operating 4 weeks per month, six days per week, and 8 hours per day, the following information is known for operation l:standard time: 2min, efficiency I :90%, reliability:80\%, defectrate:3\% for operation m:standardtime: 4min, efficiency:92\%, reliability:95\%, defectrate .7% for operation q:standardtime : 3min, efficiency : 95%, reliability:90\%, defect rate :5\% note: the line is control by computer the requires program every lot of 750 and take 1 hour on average the required input to automatic assembly line is 15315 7001 6511 6651 None