Lindsay Electronics; a small manufacturer of electronics research equipment has approximately 7,000 items in it's inventory, has hired Joan Paul to manage it's inventory. Joan has determined that 10% of the items in the inventory are a items, 35%-B items, and 55% are C items. She wants to set up a system in which all A items are counted monthly(every 20 working days), all B items are counted quarterly(every 60 working days), and C items semi-annually(every 120 working days). How many items need to be counted each day?