The combined age of Xiaoxiao and her mother this year is 56 years old. It is known that her mother is 28 years older than Xiaoxiao. How old is Xiaoxiao this year?
今年笑笑和妈妈的年龄总和是56岁，已知妈妈比笑笑大28岁，笑笑今年几岁？
<gadget id="calculator">56 - 28</gadget>
<output>28</output>

<gadget id="calculator">28 / 2</gadget>
<output>14</output>

<result>14</result>