Please answer with work shown!!

#10 too please!!!

You want to purchase an office building in Brooklyn. The property contains 32,100 square feet 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 1" year of ownership is $45.50/sqft. The vacancy rate is 15.5%. You expect to incur collection losses (from tenant default)on 5.5% of the square feet during your first year. 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? 10. What is the annual mortgage payment on the loan in question 8