4.[20 points] Suppose that the Malaysian ringgit is pegged to the US dollar at 2.5 ringgit/$. The central bank of Malaysia has $1 billion of international reserves left. Malaysian banks offer short term loans and deposits for any amount at an interest rate of 10%. Agents expect that if foreign reserves are exhausted, the Malaysian ringgit will depre- ciate to 3 ringgit/$. How would you attack the peg if you were a speculator? How much profit can you make?