This year, the age sum of Mr. Zhang and his three students is 76 years old, and the age ratio of the three students is 5:5:6. Six years later, the age of Mr. Zhang and the sum of the ages of the three students are equal. What is the age of the oldest student.
今年，张老师与他的三个学生的年龄和为76岁，且三个学生的年龄比为5：5：6，六年后张老师的年龄和三个学生的年龄之和相等，今年三个学生中年龄最大的是多少岁．
<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<gadget id="calculator">76 + 24</gadget>
<output>100</output>

<gadget id="calculator">100 / 2</gadget>
<output>50</output>

<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<gadget id="calculator">50 - 18</gadget>
<output>32</output>

<gadget id="calculator">5 + 5 + 6</gadget>
<output>16</output>

<gadget id="calculator">6 / 16</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">32 * (3/8)</gadget>
<output>12</output>

<result>12</result>