OM6- Can you please explain the following... How long will each order last (in months) if the manager uses the Economic Order Quantity?

OM6- Can you please explain the following...How long will each order last (in months) if the manager uses the Economic Order Quantity? Based on info below.A flower shop uses 800 clay pots a month. The pots are purchased at $2 each. Annual carrying costs are estimated at $0.60 per pot per year and ordering costs are $20 per order. The manager has been currently using an order size of 1600 flower pots per order.