find no of week after selection of data renge

Hi All,

I have two parameter(From Date & To Date).when i select any range, no of days should be divide in weeks.

And week should start from Monday to Sunday.

For example if select range between 06-04-2017 to 19-04-2017 then date from 6 to 9 should be count in week 1 and 10 to 16 should be

count in week 2 and 17 to 19 should be in week 3.

I hope u Understand.