A basketball player participated in 10 games. He scored 23, 14, 11 and 20 points in the 6th, 7th, 8th, and 9th games respectively. His average score in the first 9 games was higher than the average score in the first 5 games. If his average score in 10 games exceeds 18 points, then how many points should he score in the 10th game?
某篮球运动员参加了10场比赛，他在第6、7、8、9场比赛中分别得到了23、14、11和20分，他在前9场比赛的平均分比前5场比赛的平均分要高，如果他10场比赛的平均分超过18分，那么他在第10场比赛至少得多少分．
<gadget id="calculator">23 + 14 + 11 + 20</gadget>
<output>68</output>

<gadget id="calculator">84 + 68</gadget>
<output>152</output>

<gadget id="calculator">181 - 152</gadget>
<output>29</output>

<result>29</result>