Add any two numbers from 1, 2, 3, 5, 7, 9. Among the different sums, the number that is a multiple of 2 is a, and the number that is a multiple of 3 is b. Then the data is 6 , What is the median of a, b, and 8?
从1，2，3，5，7，9中任取两数相加，在不同的和数中，是2的倍数的个数为a，是3的倍数的个数为b，则数据6、a、b、8的中位数是多少．
<gadget id="calculator">1 + 5 + 1 + 2 + 2 + 1 + 2</gadget>
<output>14</output>

<gadget id="calculator">14 / 2</gadget>
<output>7</output>

<result>7</result>