The age of the little-headed father is four times that of the big-headed son. In 16 years, his age will be twice that of his son. What is the age of the little-headed father now?
小头爸爸的年龄是大头儿子的4倍，再过16年，他的年龄将是他儿子的2倍，小头爸爸现在的年龄是多少岁？
<gadget id="calculator">2 * 16</gadget>
<output>32</output>

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

<gadget id="calculator">4 - 2</gadget>
<output>2</output>

<gadget id="calculator">16 / 2</gadget>
<output>8</output>

<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<result>32</result>