Compute the initial price of a swaption that matures at time t=5 and has a strike of 0. The underlying swap is the forward-starting swap that begins at t=1, with maturity t=10 and a fixed rate of 4.5% with a notional of 1 million. To be clear, you should assume that if the swaption is exercised at t=5 then the owner of the swaption will receive all cash-flows from the underlying swap from times t=6 to t=11 inclusive. (The swaption strike of 0 should also not be confused with the fixed rate of 4.5% on the underlying swap.)