Need both parts please.

Problem 3 Part a: An investor initially purchased securities at a price of $9,852,217, with an agreement to sell them back at a price of $10,000,000 at the end of a 60 -day period. What is the repo rate? Part b: Suppose the term of the repo is one day (an 'overnight repo') and suppose the repo rate is 6.5% p.a. The borrower agrees to sell government securities at $9,998,195. What is the dollar interest of the loan