The average temperature in August in Beijing is 31.4°C, and the average temperature in August in Heilongjiang is 29.5°C. What is the difference in degrees Celsius between the average temperatures in August in Beijing and Heilongjiang?
北京八月份的平均气温是31.4℃，黑龙江八月份的平均气温是29.5℃，北京和黑龙江八月份的平均气温相差多少摄氏度？
<gadget id="calculator">31.4 - 29.5</gadget>
<output>1.9</output>

<result>1.9</result>