Uncle Wang bought a car and paid a vehicle purchase tax of 18,000 yuan at 9% of the car price. What was the original price of the car?
王叔叔买了一辆车，按车价的9%缴纳车辆购置税1.8万元，这辆车的原价是多少．
<gadget id="calculator">9 / 100</gadget>
<output>9/100 = around 0.09</output>

<gadget id="calculator">1.8 / (9/100)</gadget>
<output>20</output>

<result>20</result>