The formula is [P(r/12)] / [1-((1=r/12)^-mExample 1The Chevy Camaro will require $37,000 and the premium rate from USAA Bank will be 2.5% for a four year credit. A 10% down payment would bring the price of the car down to $33,300.37,000(.10) = 33,30033,300(2.5/12)(1 %u2013 (1 + 2.5 /12)-48) 33,300 (.21)(1 %u2013 (1 + .21)-48) 6993(1 %u2013 (1 + .21)-48) 33,300 + 6993 = 40,29340,293/48 = 839.44 The installment for this auto will be $839.44 month to month. The auto might require $40,293 in four years. 33,300 (10/12)(1 %u2013 (1+10/12)-36) 33,300 (.83)(1 %u2013 (1 + .83)-36) 27,639(1 %u2013 (1 + .83)-36)33,300 + 27,639 = 60,93960,939/36 = 1,692.75 The installment for this auto will be $1,692.75 month to month. The consideration might require $60,939 in three years. The 5% discount of the auto value, $60,939 might be $3,046.95 at the close of the three year term. The better arrangement is the more level investment rate over the 4 year period. The auto might be give or take $17,000 shabbier Example 2What type of car have you selected, and what will it cost?I chose a first class Jaguar, for the expense of $83,000What is the interest rate from your local bank for a