car is 39 yuan, and it costs 36 yuan to buy 3 dolls. How much is a car more expensive than a doll?
一辆小汽车39元，买3个布娃娃一共花了36元，一辆小汽车比一个布娃娃贵多少钱？
<gadget id="calculator">36 / 3</gadget>
<output>12</output>

<gadget id="calculator">39 - 12</gadget>
<output>27</output>

<result>27</result>