Please provide me with an accurate solution to the following problem:

A Swap involving the exchange of currencies is set to expire in 15 months. It concerns exchanging interest at a rate of 10% rate on PS20 Million and at 6% on $30 Million onetime annually. The term structure in both countries is flat and a present day currency swap would involve the exchange of dollar interest at 4% and pound sterling at 7% both of which are quoted with annual compounding. The current exchange rate is 1.55. What is the value of the swap to both parties?