It took my mother 12 hours to go to a certain city by train from Yichun. The train travels 145 kilometers per hour. How many kilometers is it from Yichun to this city?
妈妈从伊春乘火车去某城市用了12小时，火车每小时行145千米，伊春到这座城市有多少千米？
<gadget id="calculator">145 * 12</gadget>
<output>1_740</output>

<result>1_740</result>