I need help with questions 11,12,13 & 15

You want to purchase an office building in Brooklyn. The property contains 27,500 square fe of rentable space and is currently occupied by multiple tenants each with differing maturities on their respective leases. No lease is currently shorter than 1 year. The annual rent in the 1st year of ownership is $42.50/sq ft The vacancy rate is 6.5%. You expect to incur collection losses (from tenant default) on 1.5% of the square feet during your first year. 1. What is the Potential Gross Income (PGI) for the first year? 2. What is the Effective Gross Income (EGI) for the first year? 3. If operating expenses are expected to be 40% of EGI, what is the Net Operating Income (NOI) generated by the property in the 1t year of ownership? 4. You decide you want to take out a loan to finance the purchase of this property. It will be an 10 loan at a rate of 6.25%, compounded annually, with annual payments. The lender will provide financing up to a minimum Debt Service Coverage Ratio (DSCR) of 1.2 based off of the st year NOI. What is the largest annual loan payment the lender will allow you to make based on the DSCR? 5. If you get a loan that corresponds to the largest annual loan payment the lender will allow you to make based on the DSCR (computed in part 4), what will be your net income in the first year? 6. What is the largest loan a lender is willing to provide you with based on question 4? (Use the fact that this is an IO loan at 6.25%. Also use the loan payment from question 4.) 7 . The seller's asking price for the property is $7,000,000. If the lender has a maximum 70% LTV requirement what is the most the bank will lend you? (Only based on the LTV requirement.) 8. The loan must satisfy both the minimum DSCR of 1.2 and maximum LTV of 70% What is the biggest loan the borrower can get? 9. If you buy the property at the asking price of $7,000,000 using the biggest loan you can get (from question 8), what will your down payment be