Xiaoli is 8 years old this year. When she is 15 years old, her mother will be 41 years old. How old is her mother?
小丽今年8岁，当她长到15岁时妈妈正好41岁，妈妈今年多少岁？
<gadget id="calculator">15 - 8</gadget>
<output>7</output>

<gadget id="calculator">41 - 7</gadget>
<output>34</output>

<result>34</result>