Zhang Ming is 3 years old this year, and his mother is 28 years old this year. 14 years later, how much older is my mother than Zhang Ming?
张明今年3岁，妈妈今年28岁．14年后妈妈比张明大多少岁．
<gadget id="calculator">28 - 3</gadget>
<output>25</output>

<result>25</result>