In the evening of a certain day, the temperature in Huangshan dropped by 7°C from 2°C above zero at noon. What is the temperature in Huangshan this evening?
某日傍晚，黄山的气温从中午的零上2℃，下降了7℃，这天傍晚黄山的气温是多少．
<gadget id="calculator">7 - 2</gadget>
<output>5</output>

<result>5</result>