The average age of Xiao Hua and Xiao Ming is 12 years old this year, what will be their average age in two years?
小华和小明今年平均年龄是12岁，再过两年两人的平均年龄是多少岁．
<gadget id="calculator">12 + 2</gadget>
<output>14</output>

<result>14</result>