Xiaoming and his mother took the train to grandma's house at 7:00 am, and arrived at grandma's house at 7:00 pm. The train traveled 120 kilometers per hour. How many kilometers is Xiao Ming's house from grandma's house?
小明上午7时和妈妈乘火车去姥姥家，晚上7时才到姥姥家，火车每小时行120千米．小明家离姥姥家有多少千米？
<gadget id="calculator">19 - 7</gadget>
<output>12</output>

<gadget id="calculator">120 * 12</gadget>
<output>1_440</output>

<result>1_440</result>