From February 6, 2001 to July 5, the summer vacation begins. How many days are there in this semester?
2001年2月6日开学至7月5日开始放暑假，这个学期共多少天．
<gadget id="calculator">23 + 31 + 30 + 31 + 30 + 5</gadget>
<output>150</output>

<result>150</result>