Calculation of NCP days for PF - please clear my doubts

I have three query , please clear my doubts for Ex.
1. Mr. Ram was on leave in entire January month .What would be NCP days for PF?????
2. Mr. Shyam let service on 12th of Jan. & 12th Jan is Saturday . In this case, what would be NCP ??
3. Ms. Sita was absent for 1.5 days in January month SO NCP would be 1.5 or 1 ???as EPFO portal showing "1" .

1 . 31 total number of days in month
2. 0 as he left service on that day , so no ncp
3 1 as fraction of day is ignored for calculation of NCP

Emloyee ncp days is 15 for august. Have given gross wage of Rs 2,708/-. My question now is what will be the per day minimum wage calculation from PF department for this case?? Will it be 2708/(31-15) = 180.533 or 2708/(27-15)= 225.666 or something else???

if employee death in 5th days of the month how i calculate ncp days of ecr in epfo.
employee contribution for this month is 0

If an employee has worked for 30.5 days in a month & NCP in EPF is taken as 0 because 0.5 days is not taken in epf format, then what about the gross salary? From the company's point of view, it should be calculated for 30.5 days but when filing EPF returns should it be taken as gross for 31 days,i.e., full month?