The distance between cities A and B is 163 kilometers. A car drives from city A to city B at a speed of 50 kilometers per hour. After driving for 3 hours, how many kilometers is the car away from city B?
甲、乙两城相距163千米，一辆汽车从甲城开往乙城，速度是每小时50千米，行驶了3个小时，此时这辆汽车离乙城还有多少千米？
<gadget id="calculator">50 * 3</gadget>
<output>150</output>

<gadget id="calculator">163 - 150</gadget>
<output>13</output>

<result>13</result>