In 1998, the father's age was 4 times the age of the elder brother and younger brother, and in 2006, the father's age was twice the age of the elder brother and younger brother, then how many years was the father born?
1998年爸爸年龄是哥哥和弟弟年龄和的4倍，2006年爸爸的年龄是哥哥和弟弟年龄和的2倍，则爸爸出生在多少年．
<gadget id="calculator">2_006 - 1_998</gadget>
<output>8</output>

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

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

<gadget id="calculator">16 + 8</gadget>
<output>24</output>

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

<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<gadget id="calculator">12 * 4</gadget>
<output>48</output>

<gadget id="calculator">1_998 - 48</gadget>
<output>1_950</output>

<result>1_950</result>