A wire with a length of 10 meters has a mass of 0.8 kg. What is the length of this wire in meters per kilogram?
一种电线，10米长的质量是0.8千克．这种电线每一千克的长度是多少米？
<gadget id="calculator">10 / 0.8</gadget>
<output>12.5</output>

<result>12.5</result>