Lil Ken pays $1000 per month for car insurance. when the time arrives to renew his policy, his insurance agent informs him that he could save an additional 25% in premium costs if he has a saliva-testing device installed in his car. If the cost of the device is $25000 with taxes, what would his net savings be for the year, assuming an annual interest rate of 2.0% after tax. (Show your calculatons)