One evening, the temperature in Wendeng dropped by 7°C from 3°C above zero at noon. What is the temperature in Wendeng that evening?
某日傍晚，文登的气温从中午的零上3℃，下降了7℃，这天傍晚文登的气温是多少．
<gadget id="calculator">7 - 3</gadget>
<output>4</output>

<result>4</result>