A road is 2160 kilometers long, and a car travels 122.5 kilometers in 3.5 hours. If you go for another 2.5 hours, how many kilometers do you need to go?
一条公路长2160千米，一辆汽车3.5小时行了122.5千米．如果再行2.5小时，则剩下还需要行多少千米？
<gadget id="calculator">122.5 / 3.5</gadget>
<output>35</output>

<gadget id="calculator">35 * 2.5</gadget>
<output>87.5</output>

<gadget id="calculator">2_160 - 122.5 - 87.5</gadget>
<output>1_950</output>

<result>1_950</result>