Please use excel and show formulas as well as functions

2. As CFO for Everything.Com, you are shopping for 5,000 square feet of usable office space for 25 of your employees in Center City, USA. A leasing broker shows you space in Apex Atrium, a 10-story multitenanted office building. This building contains 300,000 square feet of gross building area. A total of 45,000 square feet is interior space and is nonrentable. The nonrentable space consists of areas contained in the basement, elevator core, and other mechanical and structural components. An additional 30,000 square feet of common area is the lobby area usable by all tenants. The 5,000 square feet of usable area that you are looking for is on the seventh floor, which contains 28,000 square feet of rentable area, and is leased by other tenants who occupy a combined total of 20,000 square feet of usable space. The leasing broker indicated that base rents will be $30 per square foot of rentable area. a. Calculate total rentable area in the building as though it would be rented to one tenant. b. Calculate the load factor and common area on the seventh floor only. c. Calculate the rentable area, including the load factor for common areas on the seventh floor and the total rent per square foot that will be paid by Everything.Com for the coming year if it chooses to lease the space