There are only uphill and downhill roads between the East Village and the West Village, and there is no flat road. It takes 5 hours for a person to go from East Village to West Village, and 3 hours to return from the original road. It is known that the uphill travel is 12 kilometers per hour, and the downhill travel is 20 kilometers per hour. How many kilometers are there between the two villages?
东村西村之间只有上坡路和下坡路，没有平路．某人从东村到西村，要5小时，从原路返回要3小时，已知上坡每小时行12千米，下坡每小时行20千米．东西两村相距多少千米？
<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<result>60</result>