This year is 2007, the sum of the ages of the parents is 78 years old, and the sum of the ages of the brothers is 17 years old. Four years later, the age of the father is four times the age of the brother, and the age of the mother is three times the age of the brother. Then, when the age of the father is three times the age of the elder brother, what year is it in A.D.?
今年是2007年，父母的年龄和是78岁，兄弟的年龄和是17岁．四年后，父亲的年龄是弟弟年龄的4倍，母亲的年龄是兄长年龄的3倍．那么当父亲年龄是兄长年龄的3倍时，是公元多少年．
<gadget id="calculator">17 + 8</gadget>
<output>25</output>

<gadget id="calculator">25 * 4</gadget>
<output>100</output>

<gadget id="calculator">78 + 8</gadget>
<output>86</output>

<gadget id="calculator">100 - 86</gadget>
<output>14</output>

<gadget id="calculator">4 - 3</gadget>
<output>1</output>

<gadget id="calculator">14 / 1</gadget>
<output>14</output>

<gadget id="calculator">25 - 14</gadget>
<output>11</output>

<gadget id="calculator">11 * 4</gadget>
<output>44</output>

<gadget id="calculator">44 - 4</gadget>
<output>40</output>

<gadget id="calculator">14 - 4</gadget>
<output>10</output>

<gadget id="calculator">40 - 10</gadget>
<output>30</output>

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

<gadget id="calculator">30 / 1</gadget>
<output>30</output>

<gadget id="calculator">2_007 + 30</gadget>
<output>2_037</output>

<result>2_037</result>