Tongtong's home is 840 meters away from the school, and it takes her 12 minutes to get from home to school. If she goes from home to the library at the same speed, it takes 18 minutes. How far is her home from the library?
彤彤家离学校840米，她从家到学校要12分钟，如果她用同样的速度从家到图书馆，用了18分钟．她家离图书馆有多远？
<gadget id="calculator">840 / 12</gadget>
<output>70</output>

<gadget id="calculator">70 * 18</gadget>
<output>1_260</output>

<result>1_260</result>