car drives from city A to city B, with an average speed of 110 kilometers per hour. After driving for 3 hours, it will be 201 kilometers away from city B. How long is the road between the two cities?
一辆汽车从甲城开往乙城，平均每小时行驶110千米，行驶3小时后离乙城还有201千米，两城之间的公路长多少千米？
<gadget id="calculator">110 * 3</gadget>
<output>330</output>

<gadget id="calculator">330 + 201</gadget>
<output>531</output>

<result>531</result>