An insurance company insures 100 vehicles each having a Poisson Frequency. The mean frequencies for the vehicles have a Gamma distribution (a = 3.0, 0 - 0.07). Regardless of vehicle type, loss amounts follow an" Exponential Distribution with mean 600. The following changes are made: Only 80 vehicles with mcan frequencies following Gamma distribution (a - 3.2, 0 -0.06) will be insured. A deductible of 500 per loss will be imposed. Calculate the reduction in expected aggregate amount paid by the insurer due to these changes