After school, Xiaohong participates in community voluntary labor with her classmates. The start time is 4:10, and the minute hand just crossed a flat angle at the end. How much time did Xiaohong and her classmates spend in volunteer labor in the community?
小红放学后与同学一起参加社区义务劳动．开始时间是4：10，结束时分针刚好走过了一个平角，小红和同学参加社区义务劳动的时间一共是多少．
<gadget id="calculator">180 / 30</gadget>
<output>6</output>

<gadget id="calculator">5 * 6</gadget>
<output>30</output>

<result>30</result>