Time Value of Money (Fundamentals of Business Finance) QUANTA - insurance to protect football stadiums in case of a natural disaster

Question: How to determine the outstanding value of a catastrophe debt security on the maturity date - (using FV and PV and PMT formulas to work out) using the following information:

-QUANTA borrow $10 billion on the initiation date (today - July 31 2018)

-The nominal interest rate associated with the catastrophe bond is the RBA cash rate (as at July 31 2018 - 1.5%) plus a margin of 3.50%. The interest rate is compounded MONTHLY and is fixed from the initiation date

-A minimum interest payment of $1,000,000 is due each financial year

-The following payments are also made by QUANTA:

-Monthly repayments of $250 million at the end of each month beginning on June 30 2019 until September 30 2021 (inclusive) - 3 years 3 months = 3.25

-October 31 2021: a single payment of $250 million

-January 31 2022: a single payment of $500 million