The distance between city A and city B is 1500 kilometers. After the car travels from city A to city B at a speed of 45 kilometers per hour for 12 hours, how many kilometers are there left?
甲城和乙城相距1500千米，汽车从甲城到乙城每小时以45千米的速度行驶12小时后，还有多少千米没有行？
<gadget id="calculator">45 * 12</gadget>
<output>540</output>

<gadget id="calculator">1_500 - 540</gadget>
<output>960</output>

<result>960</result>