The start and end dates of the Environmental Protection Flower Expo in a certain city are: January 1, 2008 --- August 8, 2008. How many days did the city's Environmental Protection Flower Expo last?
某城市的环保花博会的起止日期是：2008年1月1日---2008年8月8日．这个城市的环保花博会一共展览了多少天？
<gadget id="calculator">31 * 4</gadget>
<output>124</output>

<gadget id="calculator">30 * 2</gadget>
<output>60</output>

<gadget id="calculator">124 + 60 + 29 + 8</gadget>
<output>221</output>

<result>221</result>