The distance between A and B is 450 kilometers. A car travels from A to B with an average speed of 65 kilometers per hour. How many kilometers will be left after 4 hours?
甲乙两地相距450千米，一辆汽车从甲地开往乙地，平均每小时行65千米，4小时后还剩多少千米．
<gadget id="calculator">65 * 4</gadget>
<output>260</output>

<gadget id="calculator">450 - 260</gadget>
<output>190</output>

<result>190</result>