The worksheet Presidents Inn Guest Database in the Excel file provides a list of customers, name and type of the rooms they occupied, arrival and departure dates, number of occupants, and daily rate for a small bed-and-breakfast inn during one month. Note that the Daily Rate given in the worksheet only apply to up to 2 guests; additional guests must pay an additional $20 per person per day for meals. Guests staying for seven days or more receive a 10% discount. 1. Please first calculate, for each order, the Adjusted Daily Rate that includes the extra costs on meals for additional guests. 2. Calculate the Number of Days Stayed for each order. 3. Determine the Total Costs for each order