Xiaohua's father is now 25 years older than Xiaohua. Eight years later, Xiaohua's father will be three times older than Xiaohua by 5 years. Please ask for Xiaohua's current age.
小华的爸爸现在的年龄比小华大25岁，8年后小华爸爸的年龄是小华的3倍多5岁，求小华现在的年龄．
<gadget id="calculator">25 - 5</gadget>
<output>20</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 - 8</gadget>
<output>2</output>

<result>2</result>