Dad is 32 years old this year, and Xiao Ming is 8 years old this year. How many years later, the age ratio between Dad and Xiao Ming is 2:1.
爸爸今年32岁，小明今年8岁，多少年后爸爸与小明年龄的比是2：1．
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">8 / 1</gadget>
<output>8</output>

<gadget id="calculator">32 - 8 - 8</gadget>
<output>16</output>

<result>16</result>