Xiaoying skipped 87 times in the first 3 times and 78 times in the last 2 times. What is the average number of rope skipping in these 5 times?
小英跳绳前3次共跳了87下，后2次跳了78下，这5次跳绳的平均数是多少下．
<gadget id="calculator">87 + 78</gadget>
<output>165</output>

<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">165 / 5</gadget>
<output>33</output>

<result>33</result>