There are 36 large cars in a parking lot, and the number of vans is 27 less than twice the number of large cars. How many large cars and vans are there in the parking lot?
一个停车场有36辆大汽车，面包车的数量比大汽车的数量的2倍少27辆，停车场共有多少辆大汽车和面包车？
<gadget id="calculator">36 * 2</gadget>
<output>72</output>

<gadget id="calculator">72 - 27</gadget>
<output>45</output>

<gadget id="calculator">45 + 36</gadget>
<output>81</output>

<result>81</result>