Kindly answer this with a solution and a good answer.

1. Lindsay Electronics,, a small manufacturer of electronic research equipment, has approximately 7,000 items in its inventory and has hired Joan Blasco-Pau to manage its inventory. Joan has determined that 15% of the items in inventory are A items, 35% are B items, and 50% are C items. She would like 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 all C items are counted semiannually (every 120 working days).

How many items need to be counted each day?