When you say, the new car costs $22,500, is it inclusive of sales tax or before sales tax? If it is inclusive of sales tax, then:
(22,500 x 0.08) / 1.08 = 1,666.67 just multiply the 22,500 by 8% and then divide 108% and then you get the amount of sales tax included in the cost.
But if the cost of the care is before the sales tax, which means the 22,500 is only net amount with sales tax then,
22,500 x 0.08 = 1,800
