What is the average of the largest and smallest two decimals composed of 7, 9, 6 and a decimal point.
由7、9、6和小数点组成的最大两位小数和最小两位小数的平均数是多少．
<gadget id="calculator">9.76 + 6.79</gadget>
<output>16.55</output>

<gadget id="calculator">16.55 / 2</gadget>
<output>8.275</output>

<result>8.275</result>