Sean works for a company that ships hospital equipment. He needs to calculate the weight of the items being shipped. He enters the number of items in cell A1. The weight of each item is 180 pounds, so Sean enters 180 in cell A2. The weight of the packaging for each item also needs to be included. This weighs 10 pounds for each item, so he enters 10 in cell A3. Which formula should Eric use to calculate the total weight?