On New Year's Day in 2011, the temperature in a certain city is -10°C to 3°C, how much is the temperature difference on this day?
2011年元旦那天，某城市的温度是-10℃～3℃，这天的温度相差多少℃．
<gadget id="calculator">3 - (-10)</gadget>
<output>13</output>

<result>13</result>