Please solve explaining each step, thanks in advance)))

5. Assume that today, March 6th, we buy a FRA (1,7) for 100 million euros at 3% a. What it will happen if at the settlement date the interest rate are at 4.25% ? b. What if at the same date the interest is 2,80% ? In both cases: Who pays to whom (buyer or seller of the FRA)? Which amount of euros and when