The age difference between the mother and the daughter is 28 years old, and the age of the daughter is that of the mother (1/3), so how old is the daughter?
母女俩的年龄差是28岁，女儿的年龄是母亲的(1/3)，那么女儿是多少岁．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">28 / (2/3)</gadget>
<output>42</output>

<gadget id="calculator">42 - 28</gadget>
<output>14</output>

<result>14</result>