the reimburse in UPS store in 2016 it was $0 and in 2017 $450. How to get the $450?

Tioga Center is a 10,000SF office / retail building with three tenants. Analyze the following scenario beginning in January of 2016 : Reimbursable operating expenses include taxes, insurance, and CAM which total $50,000 in 2016 and increase by $1,500 per year: Assume vacancy allowance of 5%. Operating expenses are given above. Additionally, there is a (non-reimbursable) management fee which is 4% of EGI. The following table is provided to aid in your calculations