Lindt Gold Bunny Milk Ingredients: Sugar, Cocoa Butter, Milk Ingredients, Cocoa Mass, Lactose, Soy Lecithin, Barley Malt Extract, Artificial Flavour. The group of Target stores in Metro Washington DC area estimated that daily demand for Lindt Gold Bunnyacross the group is normally distributed with a mean of $75$ pounds and with standard deviation of $9$ pounds. Lindt manufacturing unit in Stratham, N$.$H takes a mean of $10$ days and a standard deviation of $2$ days to deliver the Lindt Gold Bunny $($Lead time is normally distributed$).$

Determine the ROP for the group of Target stores in Metro Washington DC that would provide a stockout probability of $10\%$ during lead time.