My mother is 45 years old this year, 1 year older than her daughter's 4 times. How old is your daughter? (solution by equation)
妈妈今年45岁，比女儿的4倍还大1岁．女儿今年多少岁？(用方程解)
<gadget id="calculator">45 - 1</gadget>
<output>44</output>

<gadget id="calculator">44 / 4</gadget>
<output>11</output>

<result>11</result>