There are two art interest groups, A and B, with 4 people in group A drawing 80 pictures each, and 6 people in group B drawing 90 pictures each. How many pictures did each person draw on average in groups A and B?
甲、乙两个美术兴趣小组，甲组4人每人作画80张，乙组6人每人作画90张．甲、乙两组平均每人作画多少张？
<gadget id="calculator">4 * 80</gadget>
<output>320</output>

<gadget id="calculator">6 * 90</gadget>
<output>540</output>

<gadget id="calculator">320 + 540</gadget>
<output>860</output>

<gadget id="calculator">4 + 6</gadget>
<output>10</output>

<gadget id="calculator">860 / 10</gadget>
<output>86</output>

<result>86</result>