if i select last year, then it shoould be retail quanity /52(number of weeks in a year). if i select current year from period filter, suppose current month is jan then calculation be like retail quantity/4(number of weeks in jan month) if current month is aug then calculation should be retail quanity/36(number weeks till august) and if the current month is oct then calculation be like retail quantity/40(number of weeks till oct) .
