The number A is 9.6, which is 1.2 greater than the number B, what is the average of the two numbers?
甲数是9.6，比乙数大1.2，两数的平均数是多少．
<gadget id="calculator">9.6 - 1.2</gadget>
<output>8.4</output>

<gadget id="calculator">9.6 + 8.4</gadget>
<output>18</output>

<gadget id="calculator">18 / 2</gadget>
<output>9</output>

<result>9</result>