The temperature in the morning is -2°C, and the temperature rises by 6°C by noon, what is the temperature in °C at noon?
早晨的气温是-2℃，到中午气温上升了6℃，中午的气温是多少℃．
<gadget id="calculator">(-2) + 6</gadget>
<output>4</output>

<result>4</result>