In the donation activity, there were 12 people in the first group, who donated 560 yuan in total, and 8 people in the second group, who donated 860 yuan in total. How much is the average contribution of each person in the two groups?
在捐款活动中，第一小组有12人，共捐560元，第二小组8人，共捐860元．两个小组平均每人捐款多少元？
<gadget id="calculator">560 + 860</gadget>
<output>1_420</output>

<gadget id="calculator">12 + 8</gadget>
<output>20</output>

<gadget id="calculator">1_420 / 20</gadget>
<output>71</output>

<result>71</result>