You are the owner of Hotspices.com, an online retailer of hip, exotic, and hard-to-find spices. Consider your inventory of saffron, a spice (generally) worth more by weight than gold. You order saffron from an overseas suppller with a shipping lead time of four weeks and you order weekly. Average weekly demand is normally distributed with a mean of 80 ounces and a standard deviation of 20 ounces. What is its expected on-order inventory? (round to the nearest integer)