The school meteorological team measured the highest temperature on a certain day was +18 degrees, and the lowest temperature was -6 degrees. What is the temperature difference today.
学校气象小组测得某一天最高气温是+18度，最低气温是-6度．这天的温差是多少度．
<gadget id="calculator">18 - (-6)</gadget>
<output>24</output>

<result>24</result>