At the District Faculty Sports Meeting, the scores of the five teachers who participated in the 30-second single-shake rope skipping competition were: 70, 65, 80, 55, and 75. What is the average score of the five teachers in the rope skipping competition (unit: times)
区教职工运动会上，参加30秒单摇跳绳比赛的5位教师的成绩分别是：70，65，80，55，75，则这5位教师跳绳比赛的平均成绩为(单位：次)多少
<gadget id="calculator">70 + 65 + 80 + 55 + 75</gadget>
<output>345</output>

<gadget id="calculator">345 / 5</gadget>
<output>69</output>

<result>69</result>