The meteorological team measured the highest daily temperatures in a week: 29°c, 31°c, 32°c, 28°c, 29°c, 31°c, 30°c. What is the average maximum temperature for this week in degrees Celsius.
气象小组测得一周中每天最高气温分别是：29°c，31°c，32°c，28°c，29°c，31°c，30°c．这一周的平均最高气温是多少摄氏度．
<gadget id="calculator">29 + 31 + 32 + 28 + 29 + 31 + 30</gadget>
<output>210</output>

<gadget id="calculator">210 / 7</gadget>
<output>30</output>

<result>30</result>