There are 45 cars parked in the parking lot. After 18 cars are driven away, the rest are arranged in exactly 3 rows. How many cars are in each row?
停车场停着45辆小汽车，开走18辆后，剩下的刚好排成3行，每行排多少辆？
<gadget id="calculator">45 - 18</gadget>
<output>27</output>

<gadget id="calculator">27 / 3</gadget>
<output>9</output>

<result>9</result>