The elder brother said to his younger brother: "When you grew up to my age, I happened to get a Ph. D.; when I was your age, you just entered kindergarten." The age of obtaining a doctorate is 7 times the age of the younger brother in kindergarten. Ask how old the elder brother is when he obtains the doctorate.
哥哥对弟弟说："你长到我这么大的时候，我恰好获得博士学位；我在你这么大的时候，你刚刚上幼儿园．"已知哥哥和的弟弟现在的年龄和为32岁，哥哥获得博士学位的年龄是弟弟上幼儿园年龄的7倍，求哥哥获得博士学位的年龄是多少岁．
<gadget id="calculator">7 + 1</gadget>
<output>8</output>

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

<gadget id="calculator">4 * 7</gadget>
<output>28</output>

<result>28</result>