3. Karl wants to buy a new car by trading in his older car at a car dealership. His car is valued at $450,000 and the dealer decides to trade him at 80% of its value. The new car costs $870,000. a. Calculate the amount of money that Karl gets for trading in his older car b. The dealer decides to finance Karl by lending him the extra money at 9.5%. Calculate the total amount of money that Karl has to repay. c. How much does he repay in equal monthly installments if he has a 4 years to repay?​