Dad is 28 years older than Xiaoxiao this year, and Xiaoxiao's age is (1/3) that of Dad. How old is Dad this year?
爸爸今年比笑笑大28岁，笑笑的年龄是爸爸的(1/3)，爸爸今年多少岁？
<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>

<result>42</result>