The distance between A and B is 3520 kilometers. A train travels from A to B. It travels from A at a speed of 2 kilometers per minute for 20 hours. How many kilometers away is it from B?
A，B两地相距3520千米，一列火车从A地开往B地，它以2千米每分的速度从A地出发行驶了20小时，这时距离B地还有多少千米？
<gadget id="calculator">2 * 1_200</gadget>
<output>2_400</output>

<gadget id="calculator">3_520 - 2_400</gadget>
<output>1_120</output>

<result>1_120</result>