Wagetype payment process

Hello All,

I am creating a wagetype for Recurring wagetype (IT0014).This wagetype payment need to pay depends upon Calendar days.

My Client want to maintain 150/- Entry only in IT0014 under the wagetype with end date 31.12.9999 but system need to pay depends upon Months Calendar days while running the payroll.

Ex:Payment per day 150/- for the month of FEB 28days*150=4200 &

MARCH 31days*150=4650.

Please suggest the process,Thanks in Advance.