The temperature in a certain place is -1.5**0C--11.5**0C, what is the temperature difference of this place **0C on this day.
某地的气温为-1.5**0C--11.5**0C，这一天该地的温差是多少**0C．
<gadget id="calculator">11.5 - (-1.5)</gadget>
<output>13</output>

<result>13</result>