The age difference between mother and daughter is 28 years old, and the age ratio between mother and daughter is 3:1, so how old is the daughter?
母女俩的年龄差是28岁，母女俩的年龄比是3：1，那么女儿是多少岁
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

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

<result>14</result>