Xiaoliang is 11 years old this year, and his mother is 36 years old this year. When Xiaoliang was 15 years old, how old was his mother?
小亮今年11岁，妈妈今年36岁，小亮15岁时妈妈比小亮大多少岁？
<gadget id="calculator">36 - 11</gadget>
<output>25</output>

<result>25</result>